Ātma-saṁyama. There are different kinds of penances. That is called ātma-saṁyama. The yogic principle is also another sort of ātma-saṁyama.
- dravya-yajñās tapo-yajñā
- yoga-yajñās tathāpare
- svādhyāya-jñāna-yajñāś ca
- yatayaḥ saṁśita-vratāḥ
There are dravyamaya-yajñas. Dravyamaya-yajñas means giving in charity. That is called dravyamaya-yajña. Jñānamaya-yajña means to engage oneself into the studies of the Vedas very critically, nicely. That is called jñānamaya-yajña.
And those who are controlling the senses, that is called yogamaya-yajña. So there are different kinds of yajñas, and according to different kinds of yajñas, there are different kinds of yogis also. Each one of them is called yogi. So according to the type of yajña, there are different kinds of yogis. Just like we are. We are trying in the process of transcendental loving service, so we are bhakti-yogīs. We are called yogi in the devotional service. Of course, we'll find in the Sixth Chapter that bhakti-yogī is the topmost yogi.