Yahya ibn Yahya al-Tamimi narrated to us, he said: Yazid ibn Zuray’ narrated to us, from Humayd, from Thabit, from Anas. And Ibn Abi ‘Umar narrated to us (and the wording is his), he said: Marwan ibn Mu’awiyah al-Fazari narrated to us, Humayd narrated to us, Thabit narrated to me, from Anas:

That the Prophet, peace and blessings be upon him, saw an old man being supported between his two sons. He said: "What is the matter with this man?" They said: He vowed to walk. He said: "Indeed, Allah is not in need of this man punishing himself," and he commanded him to ride.