Skanda Purana 7.4.52_232

7.4.52_232

ūrdhvābhirvajratuṇḍābhirabhedyābhistathaiva ca .
anyataḥ puruṣairghoraiḥ śastrapāṇibhirāvṛtau74 . .48. .
prākāreṇa ca lauhena75 samantāt parivāritau .
ākāśe cāpi lauhena tau jālena76 samāvṛtau ..49 ..

pointing upwards, with adamantine tips, and truly impenetrable; / surrounded on the other side by terrifying men with weapons in hand,
and completely enclosed all around by an iron rampart; / and in the sky, those two are covered by an iron net.