Kalaviveka 77.1.10

77.1.10

pratipadāyamāvāsyāntāstithayaḥ snānadānavratādikarmmasu tattadvacanavihitāḥ| tatra sampūrṇāyāntithau nirvvirodhamanuṣṭhānam
vṛddhihrāsādinā tu dinadvaye'pi lābhāt, sakṛcca tannimittasya
karmmaṇaḥ karttavyatvāt, snānadānavratādikaṃ kutra kriyatāṃ, kimudayagāminyām astagāminyāṃ vā| prāthamyādyatra vā bhūyasī
tithiḥ, lupyatāṃ vā vratādikam| ityādinānāvidhasandehavacanāni śrūyante
tathā hi devalaḥ
“yāṃ tithiṃ samanuprāpya udayaṃ yāti bhāskaraḥ
sā tithiḥ sakalā jñeyā snānadānavratādiṣu
yāṃ tithiṃ samanuprāpya astaṃ yāti hi bhāskaraḥ
sā tithiḥ sakalā jñeyā snānadānavratādiṣu||”
tathāca baudhāyanaḥ
“udayanneva savitā yāṃ tithiṃ pratipadyate
sā tithiḥ sakalā jñeyā dānādhyayanakarmmasu||”
tatra vyavasthāmāha vṛddhamanuḥ
“yayāstaṃ savitā yāti pitarastāmupāsate
tithiṃ tebhyo'parāhlo hi svayaṃ dattaḥ svayambhuvā
daive kammaṇi samprāpte yasyāmabhyudito raviḥ
sā tithiḥ sakalā jñeyā viparītā tu paitṛke ||”
“viparītā” astagāminī | tena udayagāmino daivakarmmaṇi,
astagāminī ca pitrye
tathāca śrutiḥ
“pūrvāhno vai devānāṃ madhyandinaṃ manuṣyāṇāmaparāhnaḥ pitṛṇām | tasmādaparāhne dadātī”ti
tathā
“varddhamānasya pakṣasya udayā pūjyate tithiḥ
yadā pakṣaḥ kṣayaṃ yāti tadā syādāparāhnikī ||”
baudhāyanasya
“varddhamānasya pakṣasya udayā pūjyate tithiḥ
sā tithyistadahorātraṃ chede tvastamayaṃ prati ||”