Compiled by Imam Yahya ibn Sharaf al-Nawawi
وعن عائشة وأم سلمة رضي الله عنهما قالتا: كان رسول الله صلى الله عليه وسلم يصبح جنبًا من غير حلم ثم يصوم. ((متفق عليه))
The Messenger of Allah (ﷺ) would wake during Ramadan (fasting) in a state of major impurity without a wet dream, but on account of sexual intercourse and he would take a bath before dawn.[Al- Bukhari and Muslim].