Manava Dharmashastra 7.26

7.26

pūrvārjitadhānyādisasye samāpte “śaradi navānām” iti sūtrakāravacanādasaptāpte'pi pūrvasasye navasasyotpattāvāgrayaṇena yajeta| sasyakṣayasyāniyatatvāt, dhanināṃ bahuhāyanajīvanocitadhānyasaṃbhavācca| sasyāntagrahaṇācca navasasyotpattirevābhipretā niyatatvāttasyāḥ pratyabdaṃ nimittatvotpatteḥ| ṛtusaṃvatsara ityetanmatāśrayeṇa catvāraścatvāro māsā ṛtavastadante'dhvaraiścāturmāsākhyairyagairyajeta| ayanayoranayoruttaradakṣiṇayorādau paśunā yajeta paśubandhākhyaṃ yāgamanutiṣṭhet| jyotiḥśāstre caitraśuklapratipadādivarṣagaṇanācchiśireṇa samāpte varṣe vasante somarasasādhyairagniṣṭomādiyāgairyajeta|