Who is Sannyasi

One should, therefore, attempt to know the distinction between spirit soul without any attachment for male and female. As long as such distinction is there, one should not try to become a sannyasi like Sukadeva Gosvami. At least theoretically one must be convinced that a living entity is neither a male nor female. The outward dress is made of matter by material nature to attract the opposite sex and thus keep one entangled in material existence. A liberated soul is above this perverted distinction. He does not distinguish between one living being and another.

For him they are all one and the same spirit. The perfection of this spiritual vision is the liberated stage, and Srila Sukadeva Gosvami attained that stage. SB 1.4.5