I don't know..as to why he is misleading people following Islamic religion and donning Hindu names!!

Dev is an Indian name, but one associated with Hindus, not Muslims. Most of the names people associate with being "Indian" are Hindu/Sikh/Jain/Buddhist. Most (not all) Christians and Muslims in India have names from the Bible and Koran, respectively. So lots of John's and Mary's among Christians, Ali's and Mariam's…