Narrated to us Abu Bakr ibn Abi Shaybah and Zuhayr ibn Harb, both said: narrated to us Waki', from Sufyan, from Habib — and narrated to us Muhammad ibn al-Muthanna: narrated to us Yahya — meaning Ibn Sa'id al-Qattan — from Sufyan and Shu'bah, both said: narrated to us Habib, from Abu al-'Abbas, from 'Abdullah ibn 'Amr, who said: A man came to the Prophet, peace and blessings be upon him, seeking his permission for jihad. He said: "Are your parents alive?" He said: Yes. He said: "Then strive in jihad [by serving] them."