It was narrated from 'Abbad bin Tamim, from his paternal uncle, that:

He saw the Messenger of Allah (ﷺ), when he prayed for rain, turn to face the Qiblah, turning his cloak around and raising his hands.

أَخْبَرَنَا هِشَامُ بْنُ عَبْدِ الْمَلِكِ أَبُو تَقِيٍّ الْحِمْصِيُّ، قَالَ حَدَّثَنَا بَقِيَّةُ، عَنْ شُعَيْبٍ، عَنِ الزُّهْرِيِّ، عَنْ عَبَّادِ بْنِ تَمِيمٍ، عَنْ عَمِّهِ، أَنَّهُ رَأَى رَسُولَ اللَّهِ صلى الله عليه وسلم فِي الاِسْتِسْقَاءِ اسْتَقْبَلَ الْقِبْلَةَ وَقَلَبَ الرِّدَاءَ وَرَفَعَ يَدَيْهِ ‏.‏