Invoking Allah for Rain (Istisqaa)
15/1. Chapter:
Going out of the Prophet (pbuh) to offer Istisqa' prayer
Sahih Bukhari
حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ عَبَّادِ بْنِ تَمِيمٍ، عَنْ عَمِّهِ، قَالَ خَرَجَ النَّبِيُّ صلى الله عليه وسلم يَسْتَسْقِي وَحَوَّلَ رِدَاءَهُ.
Narrated `Abbad bin Tamim's uncle: The Prophet (p.b.u.h) went out to offer the Istisqa' prayer and turned (and put on) his cloak inside out.
Reference : Sahih al-Bukhari 1005In-book reference : Book 15, Hadith 1USC-MSA web (English) reference : Vol. 2, Book 17, Hadith 119