It was narrated from Abu Sa'eed Ar-Ru'aini that 'Abdullah bin Malik told him, that : '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.
It was narrated that Abu Hurairah said: 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. '