Agni Purāṇa

179 - Vows observed on the fourth lunar day 

Agni said:

1-5. Ishall describe now the vows (to be performed) on the fourth lunar day which would yield enjoyment and emancipation. On the fourth lunar day in the bright (fortnight) in (the month of) mägha (February-March), oneshould fast and worship Ganapati (the lord of attendants). One who gives sesamum rice on the fifth lunar day for a year will be happy without obstacles. Gam oblations is the chief mystic syllable. (The syllables) commencing with gāṁ are the heart etc. (of the mystic syllable). Having invoked (god) (saying), “come (obeisance) to ulka (the fiery)". The permission (for the deity) to go (would be by saying) “Go away (obeisance) to ulka (the fiery)”. Oneshould worship commencing with 'ga' and 'gam' and ending with ulka by (offering) modaka (sweet ball) etc. (The sacred syllable would be)—"Oṁ we know the great fiery (god), we meditate or the (god) with the curved trunk, let that god having the tusk impel us". One who performs the vow on the fourth lunar day in the month of bhädrapada (September-October) would reach (lord) Siva. One would get (alldesired things) by worshipping the lord of attendants on the fourth lunar day on Tuesday. It is known to be avighnā chaturthi (the fourth lunar day without any obstacle) on the night of the fourth lunar day in the month of) phâlguna (March-April). One who worships (the lord of) attendants on the fourth lunar day in (the month of) chaitra (April-May) with damana would be happy.