(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. (ID)
Reference (ID): Sunan an-Nasa'i 1507 (ID)
In-book reference (ID): Book 17, Hadith 4 (ID)
English translation (ID): Vol. 2, Book 17, Hadith 1508 (ID)