Whoever deceives us is not of us
مَنْ غَشَّ فَلَيْسَ مِنِّي
Man ghashsha fa-laysa minni.
"Whoever deceives is not of me."
Narrated by Abu Hurayrah. Sahih Muslim 102
A short reflection
Said when the Prophet ﷺ noticed a grain seller had hidden wet grain at the bottom. He thrust his hand into the pile. The whole pile was suspect.