Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) narrates: I heard the Messenger of Allah (peace and blessings be upon him) say: "Nuh (peace be upon him) fasted his whole life except for the days of Eid al-Fitr and Eid al-Adha; Dawud (peace be upon him) fasted half his life; and Ibrahim (peace be upon him) fasted three days of every month, (and in this way) he fasted his whole life and also broke his fast his whole life."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13730