yadā hy adharmeṇa tamo-dhiyo nṛpā
jīvanti tatraiṣa hi sattvataḥ kila
dhatte bhagaṁ satyam ṛtaṁ dayāṁ yaśo
bhavāya rūpāṇi dadhad yuge yuge
For those asking about the time, place and persons for the avataras’ appearances, they first speak of the time. Kings (nrpah) refers to person like Kamsa. When these kings appear, the Lord assumes his six powers (bhagam), truth (satyam), pleasant words (rtam), mercy and good qualities, endowed with the highest sattva (sattvatah). He accepts beautiful forms in Vraja, Mathura and Dvaraka in every day of Brahma (yuge yuge), or in every Dvapara-yuga of the twenty-eighth cycle in Vaivasvata-manvantara in each day of Brahma.