Hadith 211
Narrated Abdullah ibn Saad al-Ansari: I asked the Messenger of Allah ﷺ as to what makes it necessary to take a bath and about the (prostatic) fluid that flows after taking a bath. He replied: that is called madhi (prostatic fluid). It flows from every male. You should wash your private parts and testicles because of it and perform ablution as you do for prayer.
Hadith 212
Narrated Abdullah ibn Saad al-Ansari: Abdullah asked the Messenger of Allah ﷺ: What is lawful for me to do with my wife when she is menstruating? He replied: What is above the waist-wrapper is lawful for you. The narrator also mentioned (the lawfulness of) eating with a woman in menstruation, and he transmitted the tradition in full.