The first 10 days of Dhul-Hijjah are the most virtuous days for supplication among all the days of the year. A person should devote his energy to remembrance, supplication, and recitation of the Qur’an.
He should engage in various supplications and remembrances, supplicating for himself, his parents, relatives, scholars, friends, benefactors, and all Muslims.
The Prophet (ﷺ) said, Fasting on the day of ‘Arafah is an expiation [of minor sins] for two years, the year preceding it and the year following it. And fasting the day of Ashura is an expiation for the year preceding it.” [Muslim, Abu Dawud, Nasa’ee, & Ibn Majah]
The Best Dua On the Day of Arafah
لا إله إلا الله وحده لا شريك له له الملك وله الحمد و هو على كل شيء قدير
‘Laa ilaaha ill-Allaah wahdahu la shareeka lah, lahu’l-mulk wa lahu’l-hamd wa huwa ‘ala kulli shay’in qadeer
None has the right to be worshipped but Allah alone, Who has no partner. His is the dominion and His is the praise, and He is Able to do all things.
May Allah accept from us all. Ameeen Yaa Raab