SB 4.8.4

duruktau kalir ādhatta
 bhayaṁ mṛtyuṁ ca sattama
tayoś ca mithunaṁ jajñe
 yātanā nirayas tathā
Synonyms: 
duruktau — in Durukti; kaliḥ — Kali; ādhatta — produced; bhayam — Fearfulness; mṛtyum — Death; ca — and; sat-tama — O greatest of all good men; tayoḥ — of those two; ca — and; mithunam — by combination; jajñe — were produced; yātanā — Excessive Pain; nirayaḥ — Hell; tathā — as well.
Translation: 
O greatest of all good men, by the combination of Kali and Harsh Speech were born children named Mṛtyu (Death) and Bhīti (Fear). From the combination of Mṛtyu and Bhīti came children named Yātanā (Excessive Pain) and Niraya (Hell).