Sunan an Nasai 1512
The Book of Praying for Rain (Al-Istisqa')
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 .
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
Grading: Abu Ghuddah: Sahih · Al-Albani: Sahih · Zubair Ali Zai: Sahih - Agreed Upon
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.