Śrī brahma-saṁhitā 5.8

Saṅkarṣaṇa possessed of creative desire is the subjective portion of Kṛṣṇa taking the initiative in bringing about the birth of the mundane world. Lying in the causal water as the primal puruṣa-avatāra He casts His glance towards Māyā (the limited potency). Such glance is the efficient cause of the mundane creation. Śambhu the symbol of masculine mundane procreation is the dim halo of this reflected effulgence. It is this symbol which is applied to the organ of generation of Māyā, the shadow of Ramā or the divine potency. The first phase of the appearance of the mundane desire created by Mahā-Viṣṇu is called the seminal principle of mahat or the perverted cognitive faculty. It is this which is identical with the mental principle ripe for procreative activity. The conception underlying it is that it is the will of the puruṣa who creates by using the efficient and material principles. Efficiency is Māyā or the productive feminine organ. The material principle is Śambhu or the procreative masculine organ. Mahā-Viṣṇu is puruṣa or the dominating divine person wielding the will. Pradhāna or the substantive principle in the shape of mundane entities, is the material principle. Nature embodying the accommodating principle (ādhāra), is Māyā. The principle of embodied will bringing about the intercourse of the two, is the dominating divine person (puruṣa), subjective portion of Kṛṣṇa, the manifestor of the mundane world. All of these three are creators. The seed of amorous creative desire in Goloka, is the embodiment of pure cognition. The seed of sex desire to be found in this mundane world, is that of Kālī, etc., who are the shadows of the divine potency. The former, although it is the prototype of the latter, is located very far from it. The seed of the mundane sex desire is the perverted reflection in this mundane world of the seed of the original creative desire. The process of the appearance of Śambhu is recorded in the tenth and fifteenth ślokas.