It is its name. (Lumaʿ, 432)
Kayn (kevn) means every act related to existence (being). (Iṣṭilāḥ, 539)
kevn-i futūr: Kevn-i futūr is the multiplicity (kesra) that arises through the discernment of the determinations (taʿayyunāt) of the One (al-Ḥaqq), of the divine unity (jamʿiyya ilāhiyya), and of the Essence of Ahadiyya (ahadiyya), which do not require differentiation; that is, it is the movement from oneness to manyness. (Kāshānī, 70; Jāmiʿ, 94)