Mahabharata 13.130.15

अष्टमीयज्ञपरता चातुर्मास्यनिषेवणम्पौर्णमास्यां तु यो यज्ञो नित्ययज्ञस्तथैव च

aṣṭamīyajñaparatā cāturmāsyaniṣevaṇampaurṇamāsyāṃ tu yo yajño nityayajñastathaiva ca

Our plain-language meaning of this verse is waiting for scholar review.