It is narrated from Hazrat Aisha (may Allah be pleased with her) that Hazrat Hamza Aslami (may Allah be pleased with him) once presented himself in the court of the Messenger and said, "O Messenger of Allah! I am a person who regularly fasts; can I fast while traveling?" The Prophet (peace and blessings be upon him) said, "If you wish, then fast, and if you wish, then do not fast."