‘Amr b. Shu'aib, on his father’s authority, said that his grandfather told of a woman who said, “Messenger of God, I have taken a vow to play the tambourine over you,” to which he replied, “Fulfil your vow.” Abu Dawud transmitted it. Razin added that she said, “And I have taken a vow to perform a sacrifice in such and such a place,” a place in which people had performed sacrifices in pre-Islamic times. He asked whether that place contained any idol worshipped in pre-Islamic times, and she replied that it did not. He asked whether any pre-Islamic festival was observed there, and she replied that none was. He then said, “Fulfil your vow.” Razin
Reported by Abu Dawud (No. 3312). Cited in Mishkat al-Masabih (No. 3438).
سَأَلَ عُمَرُ النَّبِيَّ صلى الله عليه وسلم عَنْ نَذْرٍ كَانَ نَذَرَهُ فِي الْجَاهِلِيَّةِ اعْتِكَافٍ، فَأَمَرَهُ النَّبِيُّ صلى الله عليه وسلم بِوَفَائِهِ.