अग्निनिचयः (Agninichaya) / The Accumulation of Sacred Fire & the Classification of Pitṛs by Time-Order
आदितेयस्त्वसौ सूर्यः कालाग्निः परिवत्सरः / शुक्लकृष्णगतिश्चापि अपां सारमयः खगः
āditeyastvasau sūryaḥ kālāgniḥ parivatsaraḥ / śuklakṛṣṇagatiścāpi apāṃ sāramayaḥ khagaḥ
That Sun is the son of Aditi; Kāla-Agni is called Parivatsara. His course follows the bright and dark fortnights, and he is like a bird formed of the essence of the waters.