From the mind of Lord Brahmā, Marīci took birth, from the semen of Marīci, Kaśyapa appeared, and from Kaśyapa, by the womb of Dakṣa’s daughter Aditi, Vivasvān took birth.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मरीचिर्मनसस्तस्य जज्ञे तस्यापि कश्यपः । दाक्षायण्यां ततोऽदित्यां विवस्वानभवत्सुतः
marīcirmanasastasya jajñe tasyāpi kaśyapaḥ | dākṣāyaṇyāṃ tato'dityāṃ vivasvānabhavatsutaḥ
SB 9.1.10