The Essence of the Garuḍa Purāṇa 16.9

Garuḍapurāṇasāroddhāra 16.9

yadāputreṇavaikāryaṃgayāśrāddhaṃkhageśvara || tadāsaṃvatsarādūrdhvaṃkartavyaṃ
pitṛbhaktitaḥ