It is also stated in Śrīmad-Bhāgavatam (12.3.52):
- kṛte yad dhyāyato viṣṇuṁ
- tretāyāṁ yajato makhaiḥ
- dvāpare paricaryāyāṁ
- kalau taddhari-kīrtanāt
"The self-realization which was achieved in the Satya millennium by meditation, in the Tretā millennium by the performance of different sacrifices, and in the Dvāpara millennium by worship of Lord Kṛṣṇa, can be achieved in the age of Kali simply by chanting the holy names, Hare Kṛṣṇa."