Śrīmad-Bhāgavatam · Text 11.18.8
Who is speaking and story frame
अग्निहोत्रं च दर्शश्च पौर्णमासश्च पूर्ववत् ।
चातुर्मास्यानि च मुनेराम्नातानि च नैगमै: ॥ ८ ॥
agnihotraṁ ca darśaś ca
paurṇamāsaś ca pūrva-vat
cāturmāsyāni ca muner
āmnātāni ca naigamaiḥ
The vānaprastha should perform the agnihotra, darśa and paurṇamāsa sacrifices, as he did while in the gṛhastha-āśrama. He should also perform the vows and sacrifices of cāturmāsya, since all of these rituals are enjoined for the vānaprastha-āśrama by expert knowers of the Vedas.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.