Narrated by:Qais bin Abi Gharazah said
It was narrated that Qais bin Abi Gharazah said:"The Prophet came to us when we were in the marketplace and said: 'This marketplace is filled with idle talk and (false) oaths, so mix some charity with it.'"
أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ مُغِيرَةَ، عَنْ أَبِي وَائِلٍ، عَنْ قَيْسِ بْنِ أَبِي غَرَزَةَ، قَالَ أَتَانَا النَّبِيُّ صلى الله عليه وسلم وَنَحْنُ فِي السُّوقِ فَقَالَ " إِنَّ هَذِهِ السُّوقَ يُخَالِطُهَا اللَّغْوُ وَالْكَذِبُ فَشُوبُوهَا بِالصَّدَقَةِ " .
Nesai
The Book of Oaths and Vows • Hadith 3799