He was never full for 16 years!

Al-Shafai' said: I have never been full for sixteen years, except one time I was full, so I vomited it. Abu Muhammad said: He means he made himself throw up, because being full makes the body heavy, hardens the heart, removes wisdom, brings sleep and makes the person too weak to worship.

Halyat al-Awlaya' by Abi Na'eem (13766).