Musnad Abu Ya'la al-Mawsili 129:125

Zuhayr narrated to us, Yazid narrated to us, Humayd narrated to us, from Thabit, from Anas, that the Messenger of Allah (ﷺ) saw a man being supported between his two sons. He said, "What is this?" They said, "He vowed to walk to the House (the Kaaba)." He said, "Indeed, Allah is free from the need of this man torturing himself." Then he commanded him, so he rode.