Shloka 65
मानसतीर्थ-शौचप्रशंसा | Praise of the ‘Mental Tīrtha’ and the Marks of Purity
चतुर्दशे तु दिवसे यः पूर्णे प्राशते हवि: । सदा द्वादशमासांस्तु महामेधफलं लभेत्
caturdaśe tu divase yaḥ pūrṇe prāśate haviḥ | sadā dvādaśamāsāṁs tu mahāmedhaphalaṁ labhet ||
毗湿摩说道：“若有人在第十四日已然圆满到来之时食用祭献之物（havi），便能在其后整整十二个月中，获得被称为出自大祭的功德。”
भीष्म उवाच
Educational Q&A
That careful observance of prescribed sacred timing and ritual discipline—here, partaking of the oblation on the fully arrived fourteenth day—yields enduring merit, comparable to the fruit of a major sacrifice, for an extended period (twelve months).
In Bhīṣma’s instruction on dharma and religious observances, he describes a specific rule of ritual practice: consuming the sacrificial oblation at the proper calendrical moment (the completed fourteenth day) grants the practitioner the merit associated with a great yajña for the following year.