The present so-called Hindu religion, being predominantly conducted by the Mayavada philosophy, has become a hodgepodge institution of various concocted ideas. Mayavadis greatly fear the Krsna consciousness movement and accuse it of spoiling the Hindu religion because it accepts people from all parts of the world and all religious sects and scientifically engages them in the daiva-varnasrama-dharma. As we have explained several times, however, we find no such word as “Hindu” in the Vedic literature. The word most probably came from Afghanistan, a predominantly Muslim country, and originally referred to a pass in Afghanistan known as Hindukush, which is still a part of a trade route between India and various Muslim countries. The actual Vedic system of religion is called varnasrama-dharma.

Srila Prabhupada, CC Adi 12.73 ppt.