On his father's authority, said that his grandfather said: A woman came to the Prophet ﷺ and said: Messenger of Allah, I have taken a vow to play the tambourine over you. He said: Fulfil your vow. She said: And I have taken a vow to perform a sacrifice in such a such a place, a place in which people had performed sacrifices in pre-Islamic times. He asked: For an Idol? She replied: No. He asked: For an image? She replied: No. He said: Fulfil your vow.  

أَنَّ امْرَأَةً أَتَتِ النَّبِيَّ ﷺ فَقَالَتْ يَا رَسُولَ اللَّهِ إِنِّي نَذَرْتُ أَنْ أَضْرِبَ عَلَى رَأْسِكَ بِالدُّفِّ قَالَ أَوْفِي بِنَذْرِكِ قَالَتْ إِنِّي نَذَرْتُ أَنْ أَذْبَحَ بِمَكَانِ كَذَا وَكَذَا مَكَانٌ كَانَ يَذْبَحُ فِيهِ أَهْلُ الْجَاهِلِيَّةِ قَالَ لِصَنَمٍ قَالَتْ لاَ قَالَ لِوَثَنٍ قَالَتْ لاَ قَالَ أَوْفِي بِنَذْرِكِ  

In the time of the Prophet ﷺ a man took a vow to slaughter a camel at Buwanah. So he came to the Prophet ﷺ and said: I have taken a vow to sacrifice a camel at Buwanah. The Prophet ﷺ asked: Did the place contain any idol worshipped in pre-Islamic times? They (the people) said: No. He asked: Was any pre-Islamic festival observed there? They replied: No. The Prophet ﷺ said: Fulfil your vow, for a vow to do an act of disobedience to Allah must not be fulfilled, neither must one do something over which a human being has no control.  

نَذَرَ رَجُلٌ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ أَنْ يَنْحَرَ إِبِلاً بِبُوَانَةَ فَأَتَى النَّبِيَّ ﷺ فَقَالَ إِنِّي نَذَرْتُ أَنْ أَنْحَرَ إِبِلاً بِبُوَانَةَ فَقَالَ النَّبِيُّ ﷺ هَلْ كَانَ فِيهَا وَثَنٌ مِنْ أَوْثَانِ الْجَاهِلِيَّةِ يُعْبَدُ قَالُوا لاَ قَالَ هَلْ كَانَ فِيهَا عِيدٌ مِنْ أَعْيَادِهِمْ قَالُوا لاَ قَالَ رَسُولُ اللَّهِ ﷺ أَوْفِ بِنَذْرِكَ فَإِنَّهُ لاَ وَفَاءَ لِنَذْرٍ فِي مَعْصِيَةِ اللَّهِ وَلاَ فِيمَا لاَ يَمْلِكُ ابْنُ آدَمَ  

I went out with my father to see the hajj performed by the Messenger of Allah ﷺ. I saw the Messenger of Allah ﷺ. I fixed my eyes on him. My father came near him while he was riding his she-camel. He had a whip like the whip of scribes. I heard the bedouin and the people say: The whip, the whip. My father came near him and held his foot. She said: He admitted his Prophethood and stood and listened to him. He said: Messenger of Allah, I have made a vow that if a son is born to me, I shall slaughter a number of sheep at the end of Buwanah in the dale of hill. The narrator said: I do not know (for certain) that she said: Fifty (sheep). The Messenger of Allah ﷺ said: Does it contain any idol? He said: No. Then he said: Fulfil your vow that you have taken for Allah. He then gathered them (i.e. the sheep) and began to slaughter them. A sheep ran away from them. He searched for it saying: O Allah, fulfil my vow on my behalf. So he succeeded (in finding it) and slaughtered it.  

خَرَجْتُ مَعَ أَبِي فِي حَجَّةِ رَسُولِ اللَّهِ ﷺ فَرَأَيْتُ رَسُولَ اللَّهِ ﷺ وَسَمِعْتُ النَّاسَ يَقُولُونَ رَسُولُ اللَّهِ ﷺ فَجَعَلْتُ أُبِدُّهُ بَصَرِي فَدَنَا إِلَيْهِ أَبِي وَهُوَ عَلَى نَاقَةٍ لَهُ مَعَهُ دِرَّةٌ كَدِرَّةِ الْكُتَّابِ فَسَمِعْتُ الأَعْرَابَ وَالنَّاسَ يَقُولُونَ الطَّبْطَبِيَّةَ الطَّبْطَبِيَّةَ فَدَنَا إِلَيْهِ أَبِي فَأَخَذَ بِقَدَمِهِ قَالَتْ فَأَقَرَّ لَهُ وَوَقَفَ فَاسْتَمَعَ مِنْهُ فَقَالَ يَا رَسُولَ اللَّهِ إِنِّي نَذَرْتُ إِنْ وُلِدَ لِي وَلَدٌ ذَكَرٌ أَنْ أَنْحَرَ عَلَى رَأْسِ بُوَانَةَ فِي عَقَبَةٍ مِنَ الثَّنَايَا عِدَّةً مِنَ الْغَنَمِ قَالَ لاَ أَعْلَمُ إِلاَّ أَنَّهَا قَالَتْ خَمْسِينَ فَقَالَ رَسُولُ اللَّهِ ﷺ هَلْ بِهَا مِنَ الأَوْثَانِ شَىْءٌ قَالَ لاَ قَالَ فَأَوْفِ بِمَا نَذَرْتَ بِهِ لِلَّهِ قَالَتْ فَجَمَعَهَا فَجَعَلَ يَذْبَحُهَا فَانْفَلَتَتْ مِنْهَا شَاةٌ فَطَلَبَهَا وَهُوَ يَقُولُ اللَّهُمَّ أَوْفِ عَنِّي نَذْرِي فَظَفِرَهَا فَذَبَحَهَا  

(The Prophet asked): Does it contain an idol or was a festival of pre-Islamic times celebrated there ? He replied: No. I said: This mother of mine has taken a vow and walking (is binding on her). May I fulfill it on her behalf ? Sometimes the narrator Bashshar said: May we fulfill in on her behalf ? He said: Yes.  

هَلْ بِهَا وَثَنٌ أَوْ عِيدٌ مِنْ أَعْيَادِ الْجَاهِلِيَّةِ قَالَ لاَ قُلْتُ إِنَّ أُمِّي هَذِهِ عَلَيْهَا نَذْرٌ وَمَشْىٌ أَفَأَقْضِيهِ عَنْهَا وَرُبَّمَا قَالَ ابْنُ بَشَّارٍ أَنَقْضِيهِ عَنْهَا قَالَ نَعَمْ