There are no days in which righteous deeds are more beloved to Allaah than these 10 days.” [Bukhaari]”
There are no days greater in the sight of Allaah (including Ramadhaan) & in which righteous deeds are more beloved to Him than these 10 days, so during this time recite a great deal of Tahleel (“La ilaaha ill-Allaah”), Takbeer (Allaahu Akbar) and Tahmeed (Al Hamdu Lil-laah).” [Ahmad]
A Sunnah of the Prophet s.a.w: “When you see the new moon of Dhul-Hijjah, if any one of you wants to offer a sacrifice, then he should stop cutting his hair and nails until he has offered his sacrifice.” [Muslim]
A Sunnah: “The Prophet (peace and blessings of Allaah be upon him) used to fast on the first 9 days of Dhul-Hijjah and the day of ‘Ashoora’, and 3 days each month – the first Monday and 2 Thursdays of the month”. [Nasaa’i, Abu Dawood]
Fasting on the Day of ‘Arafaah. He s.a.w said, “It expiates for the sins of the previous year and of the coming year.” [Muslim]
“There is no day on which Allaah frees more people from the Fire than the Day of ‘Arafaah. He comes close and expresses His pride to the angels, saying, ‘What do these people want?’”[Muslim]
What to do on these blessed days
Pray all your Fardh prayers in time, read much Quran and recite many adhkar and make dduah and get up for Qiyamul Layl (night prayer)
Adjust your daily routines and make the most of these precious days.
Inform others & share the reward.
May this also be a reminder for all of us to do good as long as we are getting a chance to do so.
May the blessed 10 days that are around the corner be a means for our tazkiyah and improvement. Allahumma Ameen.