"When the Prophet wanted to relieve himself, he would not raise his garment until he was close to the ground."
Jami` at-Tirmidhi Book 1, Hadith 14
← Previous Hadith "Allah's Messenger came to a waste area used by people, so he urinated on it while standing. I brought him the (water for) Wudu. Then I left to be away from him, but he called me until I was behind him. So he performed Wudu and wiped (Masaba) over his Khuff."

Jami` at-Tirmidhi Book 1, Hadith 13 Next Hadith → "The Prophet prohibited that a man should touch his penis with his right hand."

Jami` at-Tirmidhi Book 1, Hadith 15