Vajrayana sometimes refers to a fourth body called the "svābhāvikakāya" () "essential body", and to a fifth body, called the mahāsūkhakāya (, "great bliss body"). The svābhāvikakāya is simply the unity or non-separateness of the three kayas. The term is also known in Gelug teachings, where it is one of the assumed two aspects of the dharmakāya: "svābhāvikakāya" "essence body" and jñānakāya "body of wisdom". Haribhadra claims that the "Abhisamayalankara" describes Buddhahood through four kāyas in chapter 8: svābhāvikakāya, dharmakāya, sambhogakāya and nirmāṇakāya.