Tithyarka 2.p1.9

2.p1.9

"śivā śāntā sukhā rājan ! caturthī trividhā smṛtā
māsi bhādrapade śuklā śivalokamapūjitā
tasyāṃ snānaṃ tathā dānamupavāso japastathā
kriyamāṇaṃ śataguṇaṃ prasādāddantino nṛpa ! ||" iti
"caturthyā mārgaśīrṣe tu śuklapakṣe nṛpottama !
prārabhya pratimāsaṃ ca caturthyā gaṇanāyakam
sampūjya vidhinā kuryādekabhaktaṃ samāhitaḥ
akṣāralavaṇaṃ tvevaṃ pūrṇe saṃvatsare tataḥ
dvitīye vatsare cā'tha naktaṃ prati caturthikām
kuryād gaṇeśamabhyarcya tṛtīye'yācitaṃ tathā
evameva prakurvīta caturthe syādupoṣaṇam
tataścaturthe sampūro tadudyāpanamācaret
idaṃ varacaturthyākhyaṃ vrataṃ sarvārthasādhakam ||" iti
"dinārddhasamaye'tīte bhujyate niyamena yat
ekabhaktamiti proktaṃ nyūnaṃ grāsatrayeṇa tu ||" iti
"bhojanaṃ tu vidhiprāptaṃ dvātriṃśadgrāsasaṃmitam |"
'tad grāsatrayeṇa nyūnam'—ityantyapādenocyate | tenaikabhakte
ekonatriṃśad grāsā iti phalito'rthaḥ | bhojane dvātriṃśadgrāsādiniyamastu matkṛtācārākè draṣṭavyaḥ | padmapurāṇe—
"madhyāhnavyāpinī grāhyā ekabhaktavrate tithiḥ” | iti
baudhāyano'pi—
"udaye tūpavāsasya naktasyāstamaye tithiḥ
madhyāhnavyāpinī grāhyā ekabhaktavrate tithiḥ ||” iti
atra tredhā vibhaktasyāhno madhyamabhāgo madhyāhnaḥ, “pūrvāhṇe devā
aśanamabhiharanti madhyandine manuṣyā aparāhṇe pitaraḥ” iti
śruteḥ | tatrāpi dinārddhottaramavaśiṣṭaṃ madhyāhnabhāge kāryam,
‘dinārddhasamaye'tīte’ iti devalokteḥ | dinadvaye'pi madhyāhnavyāptāvekadeśasamavyāptau vā yugmavākyānnirṇayaḥ | ayañca nirṇayaḥ
svatantraikabhaktaviṣayaḥ | anyavratāṅgabhūtamekabhaktaṃ tattithāveva