'Uqbah bin 'Amir told him, that his sister vowed to walk, barefoot and bareheaded, and he mentioned that to the Messenger of Allah (ﷺ) He said: "Order her to ride and to cover her head, and to fast for three days."
Sunan Ibn Majah Book 11, Hadith 45
← Previous Hadith a woman came to the Messenger of Allah (ﷺ) and said: "My mother has died, and she had made a vow to fast, but she died before she could fulfill it. The Messenger of Allah (ﷺ) said: 'Let her guardian fast on her behalf ."

Sunan Ibn Majah Book 11, Hadith 44 Next Hadith → "The Prophet (ﷺ) saw an old man walking between his two sons, and he said: What is the matter with him?' His sons said: 'A vow, O Messenger of Allah.' He said: 'Let this old man ride, for Allah has no need of you or your vow."'

Sunan Ibn Majah Book 11, Hadith 46