Riyad as-Salihin

Riyad as-Salihin 1580

Prohibition of Deceiving others
The Book of the Prohibited actions Search within the hadiths
Riyad as-Salihin 1580
Arabic hadith text
وعنه أن رسول الله صلى الله عليه وسلم ، قال‏:‏ ‏"‏ لا تناجشوا‏"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏‏.‏
Translation
Abu Hurairah (May Allah be pleased with him) said

The Messenger of Allah (ﷺ) said, "Do not practise Najsh (to cheat)."[Muslim].