No effect

Expressions researched:
"no effect"

SB Canto 3

Nondevotees are considered to be like serpents; as milk is poisoned by a serpent's touch, so, although the narration of the pastimes of the Lord is as pure as milk, when administered by serpentlike nondevotees it becomes poisonous. Not only does it have no effect in transcendental pleasure, but it is dangerous also.

SB 3.19.33, Purport:

It is also stated in the Bhāgavatam that simply by hearing from an authoritative source, with the ear and the heart, one can relish the pastimes of the Lord, otherwise it is not possible. Sanātana Gosvāmī, therefore, has especially warned that one should not hear anything about the personality of the Lord from the lips of a nondevotee. Nondevotees are considered to be like serpents; as milk is poisoned by a serpent's touch, so, although the narration of the pastimes of the Lord is as pure as milk, when administered by serpentlike nondevotees it becomes poisonous. Not only does it have no effect in transcendental pleasure, but it is dangerous also. Lord Caitanya Mahāprabhu has warned that no description of the pastimes of the Lord should be heard from the Māyāvāda, or impersonalist, school. He has clearly said, māyāvādi-bhāṣya śunile haya sarva nāśa: if anyone hears the Māyāvādīs' interpretation of the pastimes of the Lord, or their interpretation of Bhagavad-gītā, Śrīmad-Bhāgavatam or any other Vedic literature, then he is doomed. Once one is associated with impersonalists, he can never understand the personal feature of the Lord and His transcendental pastimes.