The four varna (castes) are perceived to be located in the nature of the individual, i.e. Brahmana in sadacara (righteous conduct), Ksatriya in saurya (valor and courage), Vaisya in vyavasaya (business), and Sudra in seva (service).
A yogin experiences all men and women of all races and castes within himself. Therefore he has no hatred for anybody. He has love for every being.
— Gorakhnath, Siddha Siddhanta Paddhati III.6-8 (Translator: D Shastri)