The Book of Prayer - Rain
وَحَدَّثَنَا ابْنُ الْمُثَنَّى، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، عَنِ ابْنِ أَبِي عَرُوبَةَ، عَنْ قَتَادَةَ، أَنَّحَدَّثَهُمْ عَنِ النَّبِيِّ صلى الله عليه وسلم نَحْوَهُ .This hadith has been narrated by Anas b. Malik through another chain of transmitters
From Sahih Muslim, whose reports the scholars accept as authentic.