SB 1.3.18

caturdaśaṁ nārasiṁhaṁ
 bibhrad daityendram ūrjitam
dadāra karajair ūrāv
 erakāṁ kaṭa-kṛd yathā
Word for word: 
caturdaśam — the fourteenth in the line; nāra-siṁham — the incarnation of the Lord as half-man and half-lion; bibhrat — advented; daitya-indram — the king of the atheists; ūrjitam — strongly built; dadāra — bifurcated; karajaiḥ — by the nails; ūrau — on the lap; erakām — canes; kaṭa-kṛt — carpenter; yathā — just like.
Translation: 
In the fourteenth incarnation, the Lord appeared as Nṛsiṁha and bifurcated the strong body of the atheist Hiraṇyakaśipu with His nails, just as a carpenter pierces cane.