CC Madhya 9.96
dekhi’ ānandita haila mahāprabhura mana
While reading the book, the brāhmaṇa experienced transcendental bodily transformations. The hairs on his body stood on end, tears welled up in his eyes, and his body trembled and perspired as he read. Seeing this, Śrī Caitanya Mahāprabhu became very happy.
Although the brāhmaṇa could not pronounce the words very well due to illiteracy, he still experienced ecstatic symptoms while reading the Bhagavad-gītā. Śrī Caitanya Mahāprabhu was very pleased to observe these symptoms, and this indicates that the Supreme Personality of Godhead is pleased by devotion, not by erudite scholarship. Even though the words were imperfectly pronounced, Śrī Caitanya Mahāprabhu, Lord Kṛṣṇa Himself, did not think this very serious. Rather, the Lord was pleased by the bhāva (devotion). In Śrīmad-Bhāgavatam (1.5.11) this is confirmed:
yasmin prati-ślokam abaddhavaty api
nāmāny anantasya yaśo-’ṅkitāni yat
śṛṇvanti gāyanti gṛṇanti sādhavaḥ
“On the other hand, that literature which is full of descriptions of the transcendental glories of the name, fame, forms and pastimes of the unlimited Supreme Lord is a different creation, full of transcendental words directed toward bringing about a revolution in the impious lives of this world’s misdirected civilization. Such transcendental literatures, even though imperfectly composed, are heard, sung and accepted by purified men who are thoroughly honest.”
The purport to this verse may be considered for further information on this subject.