Skandapurana 16.283.13

16.283.13

atrāśvine māsi naraḥ paurṇamāsyāṃ viśeṣataḥ ..
śrāddhaṃ kuryādvidhānena brāhmaṇānbhojayetpṛthak ..
koṭitīrthaphalaṃ tasya bhavennai'vātra saṃśayaḥ .. 13 ..

If a man performs a śrāddha here according to rule, especially on the full-moon day in the month of Āśvina, / and feeds brahmins individually, / his fruit will be equal to ten million sacred fords; there is no doubt about this.