What is the difference between Islam and the Indian man's religion in terms of creed and teachings?

We welcome and thank you for your efforts in guiding this man. We inform you that we have no knowledge of the Baha'i faith to compare it with others. The religion of Islam is the religion that Allah has chosen for His creation, and Allah will accept no other. Whoever chooses other than it will be a loser in both worlds and will abide eternally in the Fire. Allah Almighty says: "This day I have perfected for you your religion and completed My favor upon you and have approved for you Islam as religion." And He said: "And whoever desires other than Islam as religion - never will it be accepted from him, and he, in the Hereafter, will be among the losers." And He said: "Indeed, those who disbelieved among the People of the Scripture and the polytheists will be in the fire of Hell, abiding eternally therein. Those are the worst of creatures." There is no room for comparing Islam with other religions; rather, the obligation is to enter into it and abandon what contradicts it.