One verse

Srimad Bhagavatam 11.18.30

11.18.30

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

veda-vāda
in the karma-kāṇḍa section of the Vedas
rataḥ
engaged
na
never
syāt
should be
na
nor
pāṣaṇḍī
atheistic, acting against Vedic injunctions
na
nor
haitukaḥ
a mere logician or skeptic
śuṣka-vāda
of useless topics
vivāde
in arguments
na
never
kañcit
any
pakṣam
side
samāśrayet
should take

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.