Matsya Purana — Manifestation of Kauśikī
सम्प्राप्ता कृतकृत्यत्वम् एकानंशा पुरा ह्यसि य एष सिंहः प्रोद्भूतो देव्याः क्रोधाद्वरानने //
samprāptā kṛtakṛtyatvam ekānaṃśā purā hyasi ya eṣa siṃhaḥ prodbhūto devyāḥ krodhādvarānane //
O fair-faced one, you have now attained fulfillment—your purpose is accomplished. Indeed, in former times you were a single undivided portion (of the Divine Power); and this very lion has arisen, born from the Goddess’s wrath.
This verse is not about Pralaya; it explains a protective theophany—how a lion-form power manifests from the Goddess’s wrath to complete a divine purpose.
Indirectly, it models the ethic of kṛtakṛtyatva—acting until one’s duty is fulfilled—mirroring the Matsya Purana’s broader stress on completing prescribed responsibilities (dharma) with resolve.
No Vāstu rule is stated, but the verse supports ritual/iconographic understanding: the lion is a wrath-born manifestation associated with Devī worship and her emblematic lion presence in pūjā and temple imagery.