Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 155.38

155.38

ikṣvākusaṃbhavo rājā cāṇakyo nāma dhārmikaḥ /
dvādaśāhe mṛtasyāsya tarpitāvaśanādinā //

‘The righteous king born of Ikṣvāku, named Cāṇakya,
on the twelfth day after his death, we were gratified with food and other offerings.’”