Śrīmad-Bhāgavatam · Text 10.1.2
Who is speaking and story frame
यदोश्च धर्मशीलस्य नितरां मुनिसत्तम । तत्रांशेनावतीर्णस्य विष्णोर्वीर्याणि शंस न: ॥ २ ॥
yadoś ca dharma-śīlasya
nitarāṁ muni-sattama
tatrāṁśenāvatīrṇasya
viṣṇor vīryāṇi śaṁsa naḥ
O best of munis, you have also described the descendants of Yadu, who were very pious and strictly adherent to religious principles. Now, if you will, kindly describe the wonderful, glorious activities of Lord Viṣṇu, or Kṛṣṇa, who appeared in that Yadu dynasty with Baladeva, His plenary expansion.
Read Śrīla Prabhupāda's purport on Vedabase.io