Hadith 1

Sahih Bukhari

Book 15: Invoking Allah for Rain (Istisqaa)

Chapter 1

Going out of the Prophet (pbuh) to offer Istisqa' prayer

باب الاِسْتِسْقَاءِ وَخُرُوجِ النَّبِيِّ صلى الله عليه وسلم فِي الاِسْتِسْقَاءِ

Sahih al-Bukhari 1005
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.‏
`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.