Vows and Deity-Worship According to Tithi (Pratipadā to Amāvāsyā), plus Weekdays, Nakṣatras, and Yogas
द्वादश्यां च हरिः कामस्त्रयोदश्यां महेश्वरः / चतुर्दश्यां पञ्चदश्यां ब्रह्मा च पितरोर्ऽथदाः
dvādaśyāṃ ca hariḥ kāmastrayodaśyāṃ maheśvaraḥ / caturdaśyāṃ pañcadaśyāṃ brahmā ca pitaror'thadāḥ
द्वादशीला हरिचे पूजन करावे, त्रयोदशीला कामदेवाचे. चतुर्दशीला महेश्वराचे; आणि चतुर्दशी व पंधरावीला ब्रह्मा व पितरांचे—अभीष्ट फल देणाऱ्यांचे—आराधन करावे.
Lord Vishnu (speaking to Garuda/Vainateya)
Ritual Type: Parvana
Beneficiary: Pitr
Timing: Caturdaśī and Paurṇimā (as indicated)
Concept: Ritual efficacy depends on right time (tithi) and right deity; intended outcomes are mediated by cosmic offices (Hari, Kāma, Maheśvara, Brahmā, Pitṛs).
Vedantic Theme: Karma-kāṇḍa as ordered action; devotion disciplines desire (Kāma) under dharma and īśvara governance.
Application: On Dvādaśī worship Hari; on Trayodaśī worship Kāma; on Caturdaśī worship Maheśvara; on Caturdaśī–Paurṇamāsī worship Brahmā and Pitṛs for desired fruits, per one’s sampradāya.
Primary Rasa: shanta
Secondary Rasa: adbhuta
Related Themes: Garuda Purana 1.116.6–8 (tithi-devatā sequence); Garuda Purana sections on Pitṛ-tarpaṇa and śrāddha (elsewhere in the Purana)
This verse links specific lunar days with specific deities, indicating that worship aligned with the tithi is believed to yield results more effectively and in a dharmic, orderly way.
By highlighting the Pitṛs as bestowers of fruits on key tithis, it reinforces the Garuda Purana’s emphasis on honoring ancestors through prescribed observances, which supports family welfare and fulfills ancestral obligations (pitṛ-ṛṇa).
If you follow traditional practice, you can schedule Viṣṇu worship on Dvādaśī, Śiva worship on Caturdaśī, and perform Pitṛ-oriented acts (tarpana/prayer/charity in their name) on Amāvāsyā or Paurṇimā with sincerity and ethical living.