Agni Purāṇa

182 - Vows observed on the seventh lunar day

Agni said:

1-4. Ishall describe Vows (performed) on the seventh lunar day that would yield enjoyment and emancipation. One would be free from grief by worshipping Sun in the white lotus in the month of māgha (February-March). One would get everything by the worship of Sun on the seventh lunar day in the month of bhadra (pada) (September-October). The worship of Sun in the bright (fortnight) in the month of pausa (January-February) without taking food would destroy the sin. The seventh lunar day in the dark fortnight (in the month) of magha (February-March) would confer everything. The seventh lunar day in the bright fortnight in (the month of) phalguna (March-April) (is known as) nandāsaptami. (It confers benefit) by the worship of Sun. The seventh lunar day in the bright (fortnight) in (the month of) mārgasirsha (December-January (is known as) aparājita (unconquered). (It would make one so) by worshipping (Sun then). Women (who worship) on the seventh lunar day in the bright (fortnight) in (the month of märgaširsha (December-January) and for a year would get female children.