In his Ihyaaul Uloom, Imaam Ghazaali (rahmatullah alayh) says:
“Muaaz Bin Jabal (radhiyallahu anhu) and Abdullah Bin Umar (radhiyallahu anhu) narrated: “Verily, Iblees says to his son Zalnabur: ‘Approach the people of the souks. Adorn for them lies, oaths, fraud, deception and abuse of trust, and be with the one who is the first to enter (the souk) and the last to leave from the souk.” (Ihyaaul Uloom)