(3) باب الْحَالِ الَّتِي يُسْتَحَبُّ لِلإِمَامِ أَنْ يَكُونَ عَلَيْهَا إِذَا خَرَجَ
It was narrated from Abdullah bin Zaid that:
The Messenger of Allah (ﷺ) prayed for rain wearing a black khamisah. (IT)
Reference (IT): Sunan an-Nasa'i 1507 (IT)
In-book reference (IT): Book 17, Hadith 4 (IT)
English translation (IT): Vol. 2, Book 17, Hadith 1508 (IT)