If you observe the main features beloging to Hindu dharma, you will see – “Omkara moola mantradhyaha – Punarjanma sadasayah – Veda go pratima sevee” – It means a Hindu is the one who has Omkaram as the “moola mantra” (basic holy mantra for chanting) believes in the doctrine of punarjnama, has the nature of following good custom and practices, follows the Hindu literature like the Vedas, cow worship and worship of Idol.