Vaivasvata-Manuputra Vamsha and the Marutta–Samvarta Episode
Genealogical Catalogue
अपामदुत्तरत्वावधैवतस्योत्तरायणः / स्यादिजमूर्छनाह्येच पितरः श्राद्धदेवताः
apāmaduttaratvāvadhaivatasyottarāyaṇaḥ / syādijamūrchanāhyeca pitaraḥ śrāddhadevatāḥ
The boundary-deity of the “northwardness” of the water element (āp) is called “Uttarāyaṇa”. It is also termed “Ija-mūrchanā”, and the Pitṛs are remembered as its deities for śrāddha.