English Translation
Narrated Abbas bin Tamim from his uncle who said, "The Prophet went out to the Musalla to offer the Istisqa' prayer, faced the Qibla and offered a two-Rakat prayer and turned his cloak inside out." Narrated Abu Bakr, "The Prophet put the right side of his cloak on his left side."
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.