From Sahih Muslim (Hadith 2579):
Aswad reported:I and Masruq went to 'A'isha (Allah be pleased with her) and asked. her if the Messenger of Allah (ﷺ) embraced (his wives) while fasting. She said: Yes; but he had the greatest control over his desire among you: or he was one of those who had control over his desire
Reference: Muslim 2579