Śrīmad-Bhāgavatam · Text 11.18.30
Who is speaking and story frame
वेदवादरतो न स्यान्न पाषण्डी न हैतुक: ।
शुष्कवादविवादे न कञ्चित् पक्षं समाश्रयेत् ॥ ३० ॥
veda-vāda-rato na syān
na pāṣaṇḍī na haitukaḥ
śuṣka-vāda-vivāde na
kañcit pakṣaṁ samāśrayet
A devotee should never engage in the fruitive rituals mentioned in the karma-kāṇḍa section of the Vedas, nor should he become atheistic, acting or speaking in opposition to Vedic injunctions. Similarly, he should never speak like a mere logician or skeptic or take any side whatsoever in useless arguments.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.