"I made a vow during the Ignorance period and I asked the Prophet (ﷺ) (about it) after I became Muslim. He told me to fulfill my vow."

"O Messenger of Allah, I vowed to offer a sacrifice at Buwanah." He said: "Do you intend any action of Ignorance period?" He said: "No." He said: "Then fulfill your vow."

her father met the Prophet (ﷺ) when she was riding behind him. He said: "I vowed to offer a sacrifice at Buwanah." The Messenger of Allah (ﷺ) said: "Is there any idol there?" He said: "No." He said: " Fulfill your vow." (Hasan)Another chain with similar wording.

Sa'd bin 'Ubadah asked the Messenger of Allah (ﷺ) about a vow which his mother had made, but she had died without fulfilling it. The Messenger of Allah (ﷺ) said: "Fulfill it on her behalf ."

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 ."

'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."

"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."'

Messenger of Allah (ﷺ) passed by a man in Makkah who was standing in the sun. He said: "What is this?" They said: "He vowed to fast and not to seek shade until night comes, and not to speak, and to remain standing." He said: "Let him speak and seek shade and let him sit down, but let him complete his fast."Another chain from Ibn 'Abbas, from the Prophet (ﷺ), with similar wording. expiation for breaking an oath."