Manava Dharmashastra 4.97

4.97

utsargaṃ kṛtvā dve ahanī rātriṃmiyantaṃ nādhīyīta | tadaharniśam | dvitīyaṃ cāhareva na rātrirityetāvantaṃ kālaṃ viramennādhīyīta | ubhayatohaḥpakṣā rātriḥ pakṣiṇī | yadvā yasminnahanyutsargaḥ kṛtastadahaḥ saiva ca rātriḥ anadhyāye | dvitīyasminnahanyadhyetavyam | ādye tu pakṣe dvitīyamaharanadhyāyo rātrau tvadhyayanamanujñāyate |
12 ) | na ca tasyānyaḥ pratiṣedho'sti doṣapradarśanaprakāreṇa ca na śrūyate | ‘‘rājānnaṃ teja ādatte’’ ityarthavādācca pratiṣedhaḥ | sūtikānnaṃ sūtikāmuddiśya yatkṛtaṃ tatkulīnairapi tadabhoktavyam | tadanādyamanirdaśaṃ daśāhāni yāvat | tena yadyapi kṣatriyādīnāṃ daśāhādūrdhvamāśaucaṃ tathāpi daśāhāni na bhojyam | pāṭhāntaraṃ sūtakānnamiti | sūtakaśabdena ca tadvantaḥ puruṣā lakṣyante | yeṣāṃ kule sūtakaṃ te daśāhaṃ na bhojyānnā iti | yasminpakṣe sarveṣāṃ daśāhaṃ sūtakāśaucaṃ tatrāyaṃ pratiṣedhaḥ | yadā tu mātāpitroḥ sūtakaṃ māturveti pakṣastadā yāvadāśaucaṃ na bhojyam | anirdaśagrahaṇamāśaucanivṛttyupalakṣaṇārtham | tena kṣatriyādīnāṃ yasya yāvadāśaucakālaḥ sa tāvatkālamabhojyānnaḥ | "sūtikānnamānirdaśamiti" paṭhitavye vṛttānurodhātparyācāntapadena vyavadhānam | anyaistu svatantramanirdaśagrahaṇaṃ vyākhyātam | sūtakaśabdena āśaucakālo'nudyotyate | anirdaśaṃ gavādīnāṃ payaḥ | paryācāntaṃ śaucācamanavyapetamardhabhukte kenacitkāraṇena yadyācāmati tadā punarbhuktojjhitaṃ nāśitavyam |

Having performed, according to law, the “Utsarga” of the Vedas, he shall cease for the night with its two wings, including the same day and night.—(97)

Medhātithi’s commentary (manubhāṣya):
Having perfomed the ‘Utsarga’-rite, he shall not read the Veda for two days and one night; i.e. during ‘that same day and night,’ and during the next day only (not the night). During this time, ‘he shall cease’—i.e., not read the Veda.

The night, along with the preceding and the following days, is called ‘the night with its two wings.’

Or, the day on which the ‘Utsarga’ rite has been performed, that day and the same night are ‘holidays;’ and on the next day the study should be resumed.

According to the former explanation, the next day is an ‘holiday,’ and study is to be resumed on the second night.’—(97)

This verse is quoted in Aparārka (p. 187) to the effect that after Upākarma and Utsarjana, one should observe a holiday of either one day or three days;—in Mitākṣarā (on 1.143);—in Smṛtichandrikā (Saṃskāra, p. 154), which says that this verse, along with verse 119, lays down three alternatives—(1) ‘Pakṣiṇī rātri’, i.e., one night with a day preceding, and another following it,—(2) three days (mentioned in verse 119) and (3) one day—the alternative to be adopted being determined by one’s own Gṛhyasūtra;—in Hemādri (Kāla, p. 761), which adds the same note;—and in Saṃskāramayūkha (p. 58).

Comparative notes by various authors
Viṣṇu (30.4).—‘On the fourteenth and the eighth of the month, one shall not read during the whole day and night.’

Āpastamba (Aparārka, p. 187).—‘Having performed the Upākarma on the fullmoon day of Śrāvaṇa, one should not read at night, for one month.’