Aśauca-vidhi (Rules of Impurity) within Śrāddha-kalpa — Chapter on Testing/Selecting Brahmanas and Honoring the Atithi
सत्यासत्यं च यद्दृष्टं सद सच्च महात्मभिः / सर्वज्ञानानि सृष्टानि मोक्षादीनिमहात्मभिः
satyāsatyaṃ ca yaddṛṣṭaṃ sada sacca mahātmabhiḥ / sarvajñānāni sṛṣṭāni mokṣādīnimahātmabhiḥ
What the Mahātmās have beheld as true and untrue, as being and non-being—those very Mahātmās have set forth all knowledges, including the ways of mokṣa and the rest.