Yahya bin Musa Khat يحيى بن موسى خت · The Book on Fasting

Zaid bin Thabit said: "We ate Sahar with the Messenger of Allah, then we stood for the Salat." I (Anas) said: "How long was that?" He said: "About the lengthy of fifty Ayahs."

The Prophet said: "The cupper and the one cupped have broke the fast."

The Messenger of Allah said: "Al-Fitr is the day that the people break the fast, and Al-Adha is the day that the people sacrifice."