Śrīmad-Bhāgavatam · Text 7.1.44
Who is speaking and story frame
ततस्तौ राक्षसौ जातौ केशिन्यां विश्रव:सुतौ ।
रावण: कुम्भकर्णश्च सर्वलोकोपतापनौ ॥ ४४ ॥
tatas tau rākṣasau jātau
keśinyāṁ viśravaḥ-sutau
rāvaṇaḥ kumbhakarṇaś ca
sarva-lokopatāpanau
Thereafter the same Jaya and Vijaya, the two doorkeepers of Lord Viṣṇu, took birth as Rāvaṇa and Kumbhakarṇa, begotten by Viśravā in the womb of Keśinī. They were extremely troublesome to all the people of the universe.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.