Bhagavatapurana 3.15.28.p2

3.15.28.p2

dvāry etayor niviviśur miṣator apṛṣṭvā $ pūrvā yathā puraṭa-vajra-kapāṭikā yāḥ &

29. When these two were watching with eyes wide open, the sages entered this gate without asking their permission as through the first six gates, of which the doors were made of diamond chased with gold; for they go everywhere unobstructed and free from fear or doubt on the strength of their true vision.