Sunan Abi Dawud

Sunan Abi Dawud 1487

Regarding Supplication (Ad-Du'a)
Arabic hadith text
حَدَّثَنَا عُقْبَةُ بْنُ مُكْرَمٍ، حَدَّثَنَا سَلْمُ بْنُ قُتَيْبَةَ، عَنْ عُمَرَ بْنِ نَبْهَانَ، عَنْ قَتَادَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلميَدْعُو هَكَذَا بِبَاطِنِ كَفَّيْهِ وَظَاهِرِهِمَا ‏.‏
Translation
Narrated Anas ibn Malik

I saw the Messenger of Allah (ﷺ) supplicating Allah in this manner with the palms of his hands and also with their backs upwards.