Śrīmad-Bhāgavatam · Text 8.1.19
Who is speaking and story frame
स्वारोचिषो द्वितीयस्तु मनुरग्ने: सुतोऽभवत् ।
द्युमत्सुषेणरोचिष्मत्प्रमुखास्तस्य चात्मजा: ॥ १९ ॥
svārociṣo dvitīyas tu
manur agneḥ suto ’bhavat
dyumat-suṣeṇa-rociṣmat
pramukhās tasya cātmajāḥ
The son of Agni named Svārociṣa became the second Manu. His several sons were headed by Dyumat, Suṣeṇa and Rociṣmat.
Read Śrīla Prabhupāda's purport on Vedabase.io