Narrated Thabit ibn ad-Dahhak:

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.

حَدَّثَنَا دَاوُدُ بْنُ رُشَيْدٍ، حَدَّثَنَا شُعَيْبُ بْنُ إِسْحَاقَ، عَنِ الأَوْزَاعِيِّ، عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ، قَالَ حَدَّثَنِي أَبُو قِلاَبَةَ، قَالَ حَدَّثَنِي ثَابِتُ بْنُ الضَّحَّاكِ، قَالَ : 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 " .