Shiva Purana
कारणं सर्वलोकानां सर्वलोकमयं परम् ॥ अंतर्बहिःस्थितं व्याप्य ह्यणोरणु महत्तरम् २ ॥ ३५ ॥
He is the cause of all the worlds and is the Supreme Being of all the worlds. The atom is greater than 2 pervading the inside and outside.
english translation
kAraNaM sarvalokAnAM sarvalokamayaM param ॥ aMtarbahiHsthitaM vyApya hyaNoraNu mahattaram 2 ॥ 35 ॥
hk transliteration by Sanscript