3. Make lots of Dhikr:
Do a lot of dhikr, especially in these days.
“There are no days greater in the sight of Allaah and in which righteous deeds are more beloved to Him than these ten days, so during this time recite a great deal of Tahleel (Laa ilaaha illAllaah), Takbeer (Allaahu Akbar) and Tahmeed (Alhamdulillaah)”. 
So what did the Prophet sallAllaahu 3Alayhi wa Sallam tell us to do in these days?
That, we need to make the dhikr of tahleel, tahmeed & takbeer  As soon as the announcement of Dhul-Hijjah is made, start your dhikr:
الله اكبر الله اكبر لا اله الا الله
الله اكبر الله اكبر ولله الحمد
“Allaahu Akbar, Allaahu Akbar, laa ilaaha ill-Allaah,
Allaahu Akbar, Allaahu Akbar. Wa lillaahil-hamd.”
Many people mistakenly believe that you chant this only on the day of 3Eed. But, it is meant to be recited from the beginning of Dhul-Hijjah.
Bukhaaree related that Ibn 3Umar & Abu Hurayrah said that they used to go out in the streets making loud takbeer. They did not think that this was riyaa [showing off]. They were busy with declaring the signs of Allaah. This practice has now become a forgotten Sunnah.
Why do people feel shy to follow this Sunnah?
These are the days of takbeer, tahleel & tahmeed with raised voices. Therefore revive this Sunnah by doing audible tasbeeh during all of the ten days of Dhul-Hijjah.
For women, when you are in your homes, raise your voices. You will remind your children, husbands, brothers, etc. Make it like a habit so that you will find yourself doing dhikr automatically. While walking, reclining, working, eating, just keep doing dhikr.
Send a lot of blessings and salaam upon the Prophet sallAllaahu 3Alayhi wa Sallam consistently. Just one hadeeth should be enough for the believer who loves sallAllaahu 3Alayhi wa Sallam. It is enough honor that when you send your salaam to Prophet sallAllaahu 3Alayhi wa Sallam, Allaah returns his soul to him in order to answer you: “There is no one who sends salaam upon me but Allaah will restore to me my soul so that I may return his salaam.” 
Therefore, send your darood & salaam from your heart.
Feel that special honor in doing that deed.
All kinds of dhikr will make your relation with Allaah stronger and stronger.
How many Muslims are there today? 1.5 billion? In one minute it is possible to gain 1.5 billion hasanaat.
How generous is Allaah subhaanahu wa ta3aalaa.
No one will give you like Allaah subhaanahu wa ta3aalaa gives.
So how can you gain 1.5 million hasanaat?
By making istighfaar [seeking forgiveness] for all Muslims. The Prophet sallAllaahu 3Alayhi wa Sallam is reported to have said that when a person seeks forgiveness for all believers, Allaah will write for him a hasanaat for every one of those believers. 
Just say “Astaghfirullaah” for yourself and for all the believers, from your heart. Allaah subhaanahu wa ta3aalaa is forgiving & generous.
On the Day of Judgement, when you will see your book, you will find the record of your sins in it & you will feel regret. But, SubhaanAllaah, you will find between these sins, Astaghfirullaah, Astaghfirullaah, Astaghfirullaah.
Bi-idhnillaah. Allaah, the Kareem will cancel those sins that have istighfaar beside them, around them, after them.
Indeed, rahamaat are falling down like rain. So try to be under those rahamaat. Look at it this way – there are seasons of mercy during which Allaah sends down abundant mercy [like during Ramadaan, like the days of Dhul-Hijjah, etc.]. Allaah is always generous because that is one of His subhaanahu wa ta3aalaa Attributes, but He says that He gives more during certain periods. Allaah isRaheem always, but He says He has more mercy during a certain period. These days are like those special-rate promotions or sale season. Therefore, don’t leave or ignore this sale.
Go and ask for more. Keep saying ‘astaghfirullaah’, ‘astaghfirullaah’, astaghfirullaah’, keep insisting on it till Allaah forgives you.
Start from the beginning of Dhul-Hijjah.
“…nor will He punish them while they seek (Allaah’s) forgiveness.” [soorah Al-Anfaal, v:33]
We are informed that there is no punishment from subhaanahu wa ta3aalaa on the yastaghfiroon [i.e. those who seek forgiveness]. Allaah relieves all problems with istighfaar. Those who are persistent in istighfaar in their lives, disasters and calamities will be repelled from them. Mercy is like a cloud on the head of the mustaghfiroon [those who consistently seek forgiveness].
How do we know this?
“Why seek you not the forgiveness of Allaah, that you may receive mercy?” [soorah An-Naml, v:46]
Allaah is telling us to make istighfaar to gain His mercy. Let your istighfaar ascend to Him and His mercy will descend upon you.
Fast as much as you can during these blessed days. If you can fast all of these days, then do so. Even in any regular day, Allaah has promised a great reward for the one who fasts: “Whoever fasts one day for the sake of Allaah, Allaah will keep his face seventy years distance away from the Fire because of it.”  So what about these special days for which it is said: “There is no deed more precious in the sight of Allaah, or greater in reward, than a good deed done during the ten days of Dhul-Hijjah.”
Allaah loves the good deeds in these days. Allaah loves siyaam. Put these two beloved things together, you are the doer of the things Allaah loves. He subhaanahu wa ta3aalaa will Love you, bi-idhnillaah.
Any 3Ibaadah, be it salaah, dhikr, Qur’aan, that is done during some periods of time and with them are also periods of non-action. Can you do any of them from Fajr till Maghrib continuously?
Which 3Ibaadah will you be able to do non-stop?
From Fajr till Maghrib during the best days, you will be able to be in a continuous state of worship. So please my sisters [& brothers], grab this chance eagerly. Also don’t forget you have if Allaah wills, at least one du3aa’ guaranteed with each siyaam – at the time of breaking the fast. So that is nine opportune moments during this period.
Regarding fasting on the day of 3Arafah, the Prophet sallAllaahu 3Alayhi wa Sallam said: “Fasting the day of 3Arafah, I hope, will expiate the sins of the year before it and the year to come…” 
So how does this happen?
Does this mean that we can fast on that day and for the rest of the year we can do whatever we want of bad deeds?
No! It implies that Allaah subhaanahu wa ta3aalaa will help us to abstain from sins. And, if you commit a sin by mistake, He subhaanahu wa ta3aalaa will cancel it due to His promise.
Spending for the sake of Allaah!
Only Allaah knows how many trials & calamities have been pushed away from us, our family and loved ones as a result of our sadaqah. Allaah knows how many times relief and ease has come to us due to the sadaqah we gave.
Therefore, give in the way of Allâh, as much as you can.
Don’t leave any raised hands return empty. Show Allaah that you love Him by spending from that which you love. Show Allaah subhaanahu wa ta3aalaa that all these things mean nothing besides gaining His ridha [pleasure].
Don’t look and remind yourself of what you have already spent in the past. If Allaah wills, He subhaanahu wa ta3alaa has accepted and written it for you. Now, think of how you can outdo that sadaqah during these days. Spend from what you love and Allaah will love you.
7. Preserve the Ties of Kinship:
Preserve the ties of kinship for: “No one who severs the ties of kinship will enter Paradise.” 
If it is difficult for you to call or meet every relative, then send them a message. But write with your heart and with the right intention. There is a man who connects with all of his near and far relatives. It is almost like a mission for him for the sake of Allaah. He subhaanahu wa ta3aalaa loves this 3ibaadah. Even those who are far away, he calls and connects them to the rest of the family and brings them all together. And subhaan-Allaah, Allah has given him a lot of wealth and with such ease and has made his life easy, and as a result of his deeds.
The Prophet sallAllaahu 3Alayhi wa Sallam promised this reward for the one who connects and maintains kinship: “Whoever would like his rizq [provision] to be increased and his life to be extended, should uphold the ties of kinship.” 
These were just a few of the wonderful things we can do during the forthcoming best days of Dhul-Hijjah. Therefore, if we want Allaah’s help with these deeds and our schedule for them, we need to do a lot of tawbah. The Salaf as-Salih used to say that they would feel prevented from qiyaam al-layl due to their sins. They knew that when they want to do 3ibaadah and they are unable to do it, it is due sins.
So, what do we need to do?
A lot of istighfaar with tawbah, real Tawbah!
Ask Allaah for help.
Make the du3aa: “O Allaah, help me to remember You, to give You thanks, and to perform Your worship in the best manner.” Transcription of a lecture “How to benefit from the blessed days of Dhul-Hijjah” by Umm 3Abdur-Rahmaan.
Original source Shaykh Muhammad Hussain Yaqoob’s lecture.
(Download as pdf ) Making The Most Of The Blessed Days Of Dhul-Hijjah
 Ahmad, 7/224
 Tahleel [“Laa ilaaha ill-Allah”], Tahmîd [“Alhamdulillah”] and Takbîr [“Allaahu Akbar”]. See: Ahmad, 7/224
 Aboo Daawood, 2041 – classed as hasan by al-Albaanee
 Classed as hasan by al Albaanee
 Muslim, 2/808
 Muslim, 1976
 Saheeh Muslim
 Al-Bukhaarî, 5986 and Muslim, 2557
 Saheeh Aboo Daawood, 1/284