أَخْبَرَنَا قُتَيْبَةُ، عَنْ سُفْيَانَ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ عَبَّادِ بْنِ تَمِيمٍ، عَنْ عَمِّهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم اسْتَسْقَى وَصَلَّى رَكْعَتَيْنِ وَقَلَبَ رِدَاءَهُ ‏.‏

It was narrated from 'Abbad bin Tamim, from his paternal uncle that: The Prophet (PBUH) prayed for rain, and prayed two rak'ahs, and turned his rida' around. Translation Not Available

Book reference: Sunan An Nisai Book 17 Hadith 1510
Web reference: Sunan An Nisai Volume 2 Book 17 Hadith 1511