Śrāddha-kalpa: Amarakantaka–Tīrtha-Māhātmya and Akṣaya Pitṛ-Tarpaṇa
तृतीयायां तथा पादे निराधायां तु मण्डले / महाह्रदे च कौशिक्यां दत्तं श्राद्धं महाफलम्
tṛtīyāyāṃ tathā pāde nirādhāyāṃ tu maṇḍale / mahāhrade ca kauśikyāṃ dattaṃ śrāddhaṃ mahāphalam
In the pāda of the Tṛtīyā tithi, within the Nirādhā maṇḍala, at the great lake of Kauśikī, the śrāddha offered yields great fruit.