Sulaiman bin Da'ud bin al-Jarud سليمان بن داود أبو داود الطيالسي · The Book of Fasting

"The Messenger of Allah said: 'The difference between our fasting and the fasting of the people of the Book, is eating Sahur."' '

"Someone who heard it from Jabir told me something similar."

"Tell it to us." The old man said: "My paternal uncle told me that he went to the Prophet, concerning some camels of his, while he was eating. He said: 'Come and eat.' I said: 'I am fasting.' He said: 'Allah, the mighty and sublime, has waived half of the prayer and fasting for the traveler, the pregnant woman and the sick."'

"The Messenger of Allah used to fast until we said: 'He does not want to break his fast.' And he used not to fast until we said: 'He does not want to fast."'