नित्यनैमित्तिकं कालात्सद्यः काम्ये स्वनुष्ठिते । नित्यं मासं च पक्षं च वर्षं चैव यथाक्रमम् ३१ ।
The daily and occasional rites yield their benefits in due course but the fruits of Kāmya rites are instantaneous. The necessary rites are performed everyday. The occasional rites are performed in particular months, fortnights, years or on special occasions.