Śivasaṃhitā 1.98

Cosmogony in its most esoteric and Tantric expression. Bindu (the point, the drop of masculine semen) is identified with Śiva—pure consciousness, the masculine principle. Rajas (the feminine menstrual energy, the creative fluid) is identified with Śakti—active potency, the feminine principle. The union of these two principles—not only symbolic but literal in Tantric practice—generates the totality of beings.

Bindu (point, drop, seed) is one of the richest concepts in Tantric yoga: it designates the concentrated masculine creative energy, the principle of Śiva in the body. Rajas (here in its sense of feminine flow, not of guṇa) is the Śakti counterpart. Ubhayormilanāt (from the union of both) and svayam (spontaneously, by themselves) describe the generative process as an act of freedom and spontaneity, not mechanical necessity.

In the Śivasaṃhitā’s Tantric yoga, the union of bindu and rajas has a direct practical dimension: the techniques of khecarīmudrā, vajrolīmudrā, and other practices in the following chapters will work with these fluids to reverse the process of creation—from manifestation toward reabsorption. Cosmogony thus becomes a guide to practice: knowing how the universe is created is knowing how to be liberated from it.