There are three prasthanas on the path of advancement in spiritual knowledge - namely, nyaya-prasthana (Vedanta philosophy), sruti-prasthana (the Upanisads and Vedic mantras) and smrti-prasthana - the Bhagavad-gita, Mahabharata, Puranas, etc

Expressions researched:
"there are three prasthānas on the path of advancement in spiritual knowledge" |"namely, nyāya-prasthāna (Vedānta philosophy), śruti-prasthāna (the Upaniṣads and Vedic mantras) and smṛti-prasthāna" |"the Bhagavad-gītā, Mahābhārata, Purāṇas, etc"

Sri Caitanya-caritamrta

CC Adi-lila

As already explained, there are three prasthānas on the path of advancement in spiritual knowledge—namely, nyāya-prasthāna (Vedānta philosophy), śruti-prasthāna (the Upaniṣads and Vedic mantras) and smṛti-prasthāna (the Bhagavad-gītā, Mahābhārata, Purāṇas, etc.). Unfortunately, Māyāvādī philosophers do not accept the smṛti-prasthāna. Smṛti refers to the conclusions drawn from the Vedic evidence.

CC Adi 7.117, Translation and Purport

“The living entities are energies, not the energetic. The energetic is Kṛṣṇa. This is very vividly described in the Bhagavad-gītā, the Viṣṇu Purāṇa and other Vedic literatures.

As already explained, there are three prasthānas on the path of advancement in spiritual knowledge—namely, nyāya-prasthāna (Vedānta philosophy), śruti-prasthāna (the Upaniṣads and Vedic mantras) and smṛti-prasthāna (the Bhagavad-gītā, Mahābhārata, Purāṇas, etc.). Unfortunately, Māyāvādī philosophers do not accept the smṛti-prasthāna. Smṛti refers to the conclusions drawn from the Vedic evidence. Sometimes Māyāvādī philosophers do not accept the authority of the Bhagavad-gītā and the Purāṇas, and this is called ardha-kukkuṭī-nyāya, “the logic of half a hen” (See Adi-līlā 5.176). If one believes in the Vedic literatures, one must accept all the Vedic literatures recognized by the great ācāryas, but the Māyāvādī philosophers accept only the nyāya-prasthāna and śruti-prasthāna, rejecting the smṛti-prasthāna. Here, however, Śrī Caitanya Mahāprabhu cites evidence from the Gītā, Viṣṇu Purāṇa, etc., which are smṛti-prasthāna. No one can avoid the Personality of Godhead in the statements of the Bhagavad-gītā and other Vedic literatures such as the Mahābhārata and the Purāṇas. Lord Caitanya therefore quotes a passage from the Bhagavad-gītā (BG 7.5).