al-Laith bin Sa'd الليث بن سعد · The Book on Purification

the Prophet drank milk. Then he called for water to rinse out his mouth. Then he said: "Indeed it has fat." There are narrations on this topic from Sahl bin Sa'd As-Sa'idi and Umm Salamah. Abu Eisa said: this Hadith is Hasan Sahih. Some of the people of knowledge held the view that one is to wash the mouth after drinking milk and this is recommended according us. Some others did not hold the view that one is to wash…

"Umm Habibah hint Jahsh sought a verdict from Allah's Messenger. She said 'I suffer from persistent bleeding such that I do not become pere. Shall I give up the Salat?' He said: 'No, that is only a blood vessel. So perform Ghusl then pray.' So she would perform Ghusl for each prayer."