Quotes from Mahāyāna Ghana Vyūha Sutra,
Vol. 1
“Vajra-Storehouse! The Tathāgata permanently abides and is eternally changeless, that which is a contemplative state in Buddha mindfulness and is called the tathāgatagarbha. Like infinite space, it is indestructible and aptly referred to as the nirvana realm or the dharma realm.”
《大乘密嚴經》卷1
「金剛藏，如來常住恆不變易，是修念佛觀行之境，名如來藏。猶如虛空不可壞滅，名涅槃界，亦名法界。」