Bismillahir Rahmanir Rahim
Sa’id bin yazid Radi Allahu Anhu se rivayat hai ki RasoollAllah Sallallahu Alaihi Wa sallam jab Dua maanga kartey they to dono haatho ko uthatey they aur Dua ke baad haatho ko munh par pher lete they.
[Sunan Abu Dawud, Vol1, 1479]
Narrated Sa’id bin yazid may Allah be pleased with him When the Prophet (peace and blessing of Allah be upon him) made supplication (to Allah) he would raise his hands and wipe his face with his hands.
[Sunan Abu Dawud,Book 8, Number 1487]