Tithyarka 2.p1.16

2.p1.16

atra madanaṃ sampūjya vasantotsavaḥ kāryaḥ | taduktaṃ nirṇayāmṛte
purāṇasamuccaye—
“māghamāse nṛpaśreṣṭha ! śuklāyāṃ pañcamītithau
ratikābhau tu sampūjya kartavyaḥ sumahotsavaḥ
dānāni ca pradeyāni tena tuṣyati mādhavaḥ |”
pañcamī guruvāreṇa siddhā | śanivāreṇa viruddhā | yoginyatra
dakṣiṇasyām | iti pañcamī nirṇītā
atha ṣaṣṭhī nirṇīyate | sā skandavratātiriktā saptamīyutā kāryā
taduktaṃ skānde—
“nāgaviddhā na kartavyā ṣaṣṭhī caiva kadācana
saptamīsaṃyutā kāryā ṣaṣṭhī dharmārthacintakaiḥ ||” iti
pañcamyādivedhastatraiva—
“nāgo dvādaśanāḍībhirddikpañcadaśabhistathā
bhūto'ṣṭādaśanāḍībhirddṣayatyuttarāṃ tithim ||” iti
nāgaḥ pañcamī | bhūtaścaturdaśī | dig daśamī | nāḍyo ghaṭikāḥ
ayaṃ viśeṣavedha uttaratithiviṣayaḥ | sāmānyavihitastu trimuhūrtavedhaḥ pūrvatithiviṣayaḥ | taduktaṃ kaurme—
“caturdaśī pañcamī ca tathā ca daśamī tithiḥ
pūrvāṃ tithiṃ dūṣayanti tribhireva muhūrttakaiḥ ||” iti
yadā tithikṣayavaśāduttaraviddhā na labhyate, tadā skandavratavad
vratāntaramapi nāgaviddhāyāṃ kāryam | tadāha mādhavīye vasiṣṭhaḥ—
“ekādaśī tṛtīyā ca ṣaṣṭhī caiva trayodaśī
pūrvaviddhā tu karttavyā yadi na syātpare'hani ||” iti
upavāse'pi paraiva, ‘ekādaśāṣṭamī’ iti pūrvodāhṛtavacanāt
sāmānyataḥ sarvaṣaṣṭhyāṃ ravivārayoge lolārkayātrā kāryā
“kṛtāni yāni pāpāni naraiḥ saṃvatsarādapi
naśyanti kṣaṇatastāni ṣaṣṭhyarke loladarśanāt ||”
iti kāśīkhaṇḍe uktatvāt | lolo lolārkaḥ
āṣāḍhaśuklaṣaṣṭhī skandaṣaṣṭhī | sā pañcamīyutā kāryā,
“kṛṣṇāṣṭamī skandaṣaṣṭhī śivarātriścaturdaśī