There is a split in Hindu schools of thought - some do not consider atheism as a valid Hindu path, i.e. that nastika is not part of Hinduism and that the three

There is a split in Hindu schools of thought - some do not consider atheism as a valid Hindu path, i.e. that nastika is not part of Hinduism and that the three requirements for any Hindu sect are 1. belief in one supreme God that is immanent and transcendent, 2. belief in reincarnation, 3. belief in karma. Nastika schools like Jain, Buddhism and some Hindu sects believe 2 and 3 but not 1.