Abdullah bin Swad'h عبد الله بن سوادة · The Book on Fasting

"Some cavalry man of the Messenger of Allah came galloping upon us, so I came to the Messenger of Allah and found him having lunch. He said: "Come and eat." I said: 'I am fasting.' So he said: 'Come and I will narrate to you about the fast - or fasting. Indeed Allah Most High lifted (the fast and) half of the Salat from the traveler, and (He lifted) the fast - or fasting - from the pregnant person, or…