Smritikaustubha 1.31.p1.10

1.31.p1.10

tannaktaṃ naktamityāhurna naktaṃ niśi bhojanam | iti skāndavacanāt
pūrvadine'dhikapradoṣaikadeśavyāptāvapi paratraiva pradoṣe naktaṃ kāryam
naktasya divārātrivratatvena divārātrispṛktithereva tatra praśastatvāt | evaṃ paradina eva pradoṣavyāptau paratraiva pradoṣādhikavyāptau
ca paratraiva ca naktaṃ nirvivādam | pūrvatraiva pradoṣavyāptau pūrvatraiva
naktamityapi tathā | atra niyamo gāruḍe-haviṣyabhojanaṃ
snānaṃ satyamāhāralāghavam | agnikāryamadhaḥśayyāṃ naktabhojī
ṣaḍācaret | iti | snānamidaṃ naktavratāṅgabhūtaṃ tatkālīnaṃ vidhīyate | agnikāryaṃ vyāhṛtibhirājyahomo laukikāgnau sakṛt
idaṃ ca naktabhojanaṃ-sāyaṃsaṃdhyā trighaṭikā ravāvastaṃgate satiiti nirdiṣṭasaṃdhyākālamatikramya kāryam-catvāryetāni kāryāṇi
saṃdhyāyāṃ parivarjayet | āhāraṃ maithunaṃ nidrāṃ svādhyāyaṃ ca
caturthakam | iti mārkaṇḍeyavacanāditi kecit | hemādristu
sūryāstaprabhṛtinakṣatradarśanāvadhireva mukhyaḥ saṃdhyāpadārthaḥ | tatsaṃbandhādghaṭikātrayamaupacārikārthaḥ | satyapi ghaṭikātrayasya
mukhyatve rāgataḥ prāptameva bhojanaṃ tatra niṣidhyate na vihitaṃ
naktabhojanamityāha | tanna | svalpamahākālayoḥ saṃdhyāpadavācyatvasmṛtitulyatve ekasya vācyatvamaṅgīkṛtyetaratropacārasvīkāra
ityatra vinigamanābhāvāt, rāgataḥ prāptasyaiva niṣedhābhyupagame'pi
naktavratina ekākino bhavedapyuktakāle bhojanamanyairbrāhmaṇabālavṛddhāturaiḥ saha bhojanaṃ tu pradoṣottaraghaṭikātraya eva kartumucitam | sati saṃbhave parapratyavāyasyāpi parihāryatvāt | ekādaśyādāvupavāsapratyāmnāyabhūtaṃ naktaṃ tu upavāsadina eveti