Prabhupāda: So that is the standard of pious activity. Now, this is also pious activity, heeding before teacher. That if by satisfying the poor teachers one becomes pious, how much pious he is who is trying to satisfy the supreme teacher, Kṛṣṇa. He's also a living creature. He's also individual person. Nityo nityānāṁ cetanaś cetanānām (Kaṭha Upaniṣad 2.2.13).