Śrīmad-Bhāgavatam 3.17.16
SB 3.17.16
Open the full passageSanskrit
tāv ādi-daityau sahasā vyajyamānātma-pauruṣau vavṛdhāte 'śma-sāreṇa kāyenādri-patī iva
Translation
These two demons who appeared in ancient times soon began to exhibit uncommon bodily features; they had steellike frames which began to grow just like two great mountains.