It will be Naku's dupatta. Dutta taking a purohit or pandit's dupatta and killing the men by squeezing the life out of them with it has religious overtones (taking a holy person's clothing article to kill someone in a mandir)...it would be just too weird. Using a holy man's dupatta to kill....I much prefer Naku's...now that has other connotations. 😉 😳
It cud be the dupatta of one of the goons dressed as a priest. Best wud be if Dutta's family is held at gun point...then to bug dutta the goons misbehave with naku by pulling off her dupatta...that pisses off dutta and he takes on the goons with the dupatta and after finishing them off gives the dupatta back to naku(it wud be too much to expect him to put it back on her).