The Essence of the Garuḍa Purāṇa 19.74

Garuḍapurāṇasāroddhāra 19.74

idaṃ jñānamidaṃ jñeyamiti ciṃtāsamākulāḥ || paṭhaṃtyaharniśaṃ śāstraṃ paratattvaparā
ṅmukhāḥ