Abu Qatadah reported: The Prophet, peace and blessings be upon him, said, “Beware of swearing many oaths while trading. Verily, it helps trade but erases the blessing.”
Source: Ṣaḥīḥ Muslim 1607
Grade: Sahih (authentic) according to Muslim
Al-Nawawi said, “In this is the prohibition of swearing many oaths while trading, as it is disapproved to swear an oath without a need to do so.”
Source: Sharḥ al-Nawawī ‘alá Ṣaḥīḥ Muslim 1606
عَنْ أَبِي قَتَادَةَ الْأَنْصَارِيِّ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ إِيَّاكُمْ وَكَثْرَةَ الْحَلِفِ فِي الْبَيْعِ فَإِنَّهُ يُنَفِّقُ ثُمَّ يَمْحَقُ
1607 صحيح مسلم كتاب المساقاة باب النهي عن الحلف في البيع
قال النووي وَفِيهِ النَّهْيُ عَنْ كَثْرَةِ الْحَلِفِ فِي الْبَيْعِ فَإِنَّ الْحَلِفَ مِنْ غَيْرِ حَاجَةٍ مَكْرُوهٌ
1606 شرح النووي على مسلم