Mayamatam 12.56

12.56

ayasā nandakaṃ garbhaṃnirṛtestuvimānake
varuṇe makaraṃ pāśaṃ lohajaṃhemajaṃtathā

a sword of iron as the foundation deposit in the temple of Nirṛti; / for Varuṇa, a sea-monster of iron and a noose of gold;