śaṅkha-cakrādy-ūrdhva-puṇḍra- dhāraṇādy-ātma-lakṣaṇam tan nāma-karaṇaṁ caiva vaiṣṇavatvam ihocyate

"After initiation, the disciple's name must be changed to indicate that he is a servant of Lord Visnu. The disciple should also immediately begin marking his body with tilaka (urdhva-pundra), especially his forehead. These are spiritual marks, symptoms of a perfect Vaisnava." This is a verse from the Padma Purana, Uttara-khanda. A member of the sahajiya-sampradaya does not change his name; therefore he cannot be accepted as a Gaudiya Vaisnava. If a person does not change his name after initiation, it is to be understood that he will continue in his bodily conception of life.