526 – Abu Khaythamah narrated to us; Yahya ibn Saʿīd narrated to us, from Sufyan; Abu al-Zinad narrated to us, from Musa ibn Abi ʿUthman, from his father, from Abu Hurayrah, who reported that the Prophet—peace and blessings be upon him—said: “A woman is not to observe a voluntary fast while her husband is present unless he grants her permission.”