caturtha — the fourth Manu uttama-bhrātā — the brother of Uttama manuḥ — became the Manu nāmnā — celebrated by the name ca — also tāmasaḥ — Tāmasa pṛthuḥ — Pṛthu khyātiḥ — Khyāti naraḥ — Nara ketuḥ — Ketu iti — thus ādyāḥ — headed by daśa — ten tat-sutāḥ — sons of Tāmasa Manu.