Hadith #3335Commercial Transactions (Kitab Al-Buyu) · Narrated by Mua'dh bin Mua'dh bin Nsr معاذ بن معاذ بن نصر, Smak bin Hrb bin Aws سماك بن حرب بن أوس, Sufyan bin Sa‘id Ath-Thawri سفيان الثوري, Suwayd bin Qays al-Tajibi سويد بن قيس التجيبي, Ubaidullah bin Mua'dh عبيد الله بن معاذ بن معاذ بن نصر · Sahih
I heard Messenger of Allah (ﷺ) say: Swearing produces a ready sale for a commodity but blots out the blessing. The narrator Ibn al-Sarh said: “for earning”. He also narrated this tradition from Sa’id b. al-Musayyab on the authority of Abu Hurairah from the Prophet (ﷺ).