Kurma Purana — Purva Bhaga, Shloka 39
Nine Creations (Sarga), Guṇa-Streams of Beings, and Brahmā’s Progeny in Cyclic Time
युक्तात्मनस्तमोमात्रा उद्रिक्ताभूत् प्रजापतेः / ततो ऽस्य जघनात् पूर्वमसुरा जज्ञिरे सुताः
yuktātmanastamomātrā udriktābhūt prajāpateḥ / tato 'sya jaghanāt pūrvamasurā jajñire sutāḥ
对生主（Prajāpati）而言，虽其心已调和一体，然黑暗的惰性之质（tāmas）却转为占上。于是，从他臀部前侧，阿修罗作为其子而生。
Narrator (Purana narrator, traditionally Suta recounting the cosmological account to sages)
Primary Rasa: bibhatsa
Secondary Rasa: bhayanaka
FAQs
It distinguishes the disciplined self (yukta-ātman) from fluctuations of prakṛti: even a progenitor can exhibit predominance of tamas, implying that the guṇas belong to manifested nature, while true Selfhood is to be mastered and transcended through yogic integration.
The verse indirectly highlights yuktātman—mental integration and restraint—showing that when tamas rises, creation trends toward obscuration; Kurma Purana’s broader yoga teaching emphasizes purification (śuddhi), vigilance against tamas, and steady discipline leading toward clarity (sattva) and liberation.
Not by direct naming, but by a shared doctrinal frame: creation proceeds through guṇas under divine order, a view compatible with both Shaiva and Vaishnava presentations in the Kurma Purana, where ultimate reality is approached through yogic mastery beyond tamas.