Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) saw an old man who was leaning on his sons for support. He (peace and blessings be upon him) asked: "What is the condition of this old man?" His two sons said: He was under a vow. He (peace and blessings be upon him) said: "O old man! Ride, for Allah has no need of you or of your vow."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النذور / 20111