Where does “دَلّال” come from?

دَلّال (Classical Persian) comes from Arabic دَلَّال — auctioneer, broker, middleman, agent.

Ancestry of “دَلّال”, step by step

Step	Language	Word	Meaning
1	Arabic	دَلَّال	auctioneer, broker, middleman, agent

دَلّال — Etymology, Origin & Word History | Etymology Explorer