Hadith 35:45
Sahih (Darussalam)
It was narrated from Abu Hurairah that the Prophet said:
"Do not make vows, for a vow does not have any impact on the Qadar. Rather it is just a means of taking wealth from the miserly."
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا عَبْدُ الْعَزِيزِ، عَنِ الْعَلاَءِ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " لاَ تَنْذِرُوا فَإِنَّ النَّذْرَ لاَ يُغْنِي مِنَ الْقَدَرِ شَيْئًا وَإِنَّمَا يُسْتَخْرَجُ بِهِ مِنَ الْبَخِيلِ "
Original Reference: Sunan an-Nasa'i 3805