Matsya Purana — Brahmā–Gāyatrī as a Divine Pair and the Early Genealogies of Creation
तथापि लज्जावनतः प्रजापतिर् अभूत्पुरा स्वसुतोपगमाद् ब्रह्मा शशाप कुसुमायुधम् //
tathāpi lajjāvanataḥ prajāpatir abhūtpurā svasutopagamād brahmā śaśāpa kusumāyudham //
Even so, the Prajāpati (Brahmā) once bowed down in shame because of his approach toward his own daughter; and Brahmā then pronounced a curse upon Kusumāyudha (Kāma, the god of love).
This verse is not about Pralaya; it belongs to early creation-era (sarga) mythic narration, highlighting ethical disorder (improper desire) even among cosmic progenitors and the corrective role of a curse.
It reinforces dharma through a negative exemplar: self-restraint (saṃyama), shame at wrongdoing (lajjā), and social/sexual propriety are implied virtues for householders and rulers, who must curb desire to preserve order.
No Vāstu or ritual procedure is stated directly in this verse; its significance is ethical and narrative—explaining the cursing of Kāma (desire), a theme that later frames self-control in rites and conduct.