Narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) went to the house of Sayyida Juwayriya bint al-Harith (may Allah be pleased with her) on Friday. She was observing a fast. The Prophet (peace and blessings be upon him) asked: "Did you fast yesterday?" She replied: "No." The Prophet (peace and blessings be upon him) then asked: "Do you intend to fast tomorrow?" She replied: "No." The Prophet (peace and blessings be upon him) said: "Then break your fast."