Sahih al-Bukhari 6608
Book 82: Divine Will (Al-Qadar) · Narrated by Ibn `Umar
Arabic
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا سُفْيَانُ، عَنْ مَنْصُورٍ، عَنْ عَبْدِ اللَّهِ بْنِ مُرَّةَ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ نَهَى النَّبِيُّ صلى الله عليه وسلم عَنِ النَّذْرِ قَالَ " إِنَّهُ لاَ يَرُدُّ شَيْئًا، وَإِنَّمَا يُسْتَخْرَجُ بِهِ مِنَ الْبَخِيلِ ".
English translation
Narrated Ibn `Umar:The Prophet (ﷺ) forbade vowing and said, "In fact, vowing does not prevent anything, but it makes a miser to spend his property
Reference: Sahih al-Bukhari 6608, Book of Divine Will (Al-Qadar). English translation by Dr. Muhammad Muhsin Khan.