question #2 Sahih al-Bukhari 1025, Book 15, Hadith 20 : What is the purpose of turning one’s cloak inside out during the Istisqa’ prayer?

“I saw the Prophet (ﷺ) on the day when he went out to offer the Istisqa’ prayer. He turned his back
towards the people and faced the Qibla and asked Allah for rain. Then he turned his cloak inside out
and led us in a two rak`at prayer and recited the Qur’an aloud in them.”