The Sufi saint Mazhar Jaan Jana of 18th century Delhi believed that the Quran condemns bowing before deities because in pre-Islamic idol worship stones were considered god. But Hindus pray to god through that idol, which is a reflection of god. In Vedas god is nirguna and nirankara, that is, he has no attributes and no shape, that is the real belief of Hindus. As Muslims visit graves, so Hindus worship idols.
Asghar Ali Engineer