Arafah

Dua on the day of Arafah

لَا إِلَهَ إِلَّا اللهُ ، وَحْدَهُ لَا شَرِيكَ لَهُ ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ ، وهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ
laa ilaaha ill-allaahu, waḥdahu laa shareeka lah, lahul-mulku wa lahul-ḥamdu, wa huwa ‛alaa kulli shay’in qadeer 

The best of supplications is the supplication on the day of AAarafah and the best which I and the Prophets before me have said (is):

“None has the right to be worshipped except Allah, alone, without partner. To Him belongs sovereignty and all praise and He is over all things omnipotent.”