Sahih al-Bukhari 1026

Arabic

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ عَبَّادِ بْنِ تَمِيمٍ، عَنْ عَمِّهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم اسْتَسْقَى فَصَلَّى رَكْعَتَيْنِ، وَقَلَبَ رِدَاءَهُ‏.‏

English translation

Narrated `Abbad bin Tamim from his uncle who said:"The Prophet (ﷺ) invoked Allah for rain and offered a two rak`at prayer and he put his cloak inside out

Reference: Sahih al-Bukhari 1026, Book of Invoking Allah for Rain (Istisqaa). English translation by Dr. Muhammad Muhsin Khan.