Isra'il bin Yonus bin Abi Ishaq إسرائيل بن يونس بن أبي إسحاق · The Book of Fasting

"I came to the Prophet to discuss something and he was eating breakfast. He said: 'Come and eat.' I said: 'I am fasting.' He said: 'Come and I will tell you about fasting. Allah has waived half of prayer and fasting from the traveler, and he has granted a concession to pregnant women and the sick."'

"The Messenger of Allah came to us one day and we said: 'We have been given some Hais and we set aside some for you.' He said: 'I am fasting, but he broke his fast.