And the Prophet (peace and blessings be upon him) said: Most traders are sinful and wicked. Someone asked: O Messenger of Allah! Has Allah not declared trade to be lawful? He said: Why not, but these people, when they speak, they lie, and when they swear oaths, they become sinful.
Hadith Referenceمسند احمد / مسند المكيين / 15530
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد قوي