On the day of Arafah, one should engage in dua. This day is a mubaarak day, even more blessed than the other ten days of Zul Hijjah. It is reported that Hazrat Ali (radhiyallahu ‘anhu) mentioned that on this day, Allah Ta‘ala emancipates more people from the fire of Jahannum than on any other day.

Hazrat Ali (radhiyallahu ‘anhu) would also make the following dua on the day of Arafah and would encourage some of his companions to make the same dua:

اَللّٰهُمَّ أَعْتِقْ رَقَبَتِيْ مِنَ النَّارِ وَأَوْسِعْ لِيْ مِنَ الرِّزْقِ الْحَلالِ وَاصْرِفْ عَنِّيْ فَسَقَةَ الْجِنِّ وَالْإِنْسِ

O Allah! Free my neck from the fire of Jahannum, bless me with abundant halaal sustenance, and repel from me the evil and transgressive jinn and people. (Lataaif-ul-Ma’aarif pg. 284)