SB 5.5.17
kas tam svayam tad-abhijño vipascid
avidyayam antare vartamanam
drstva punas tam saghrnah kubuddhim
prayojayed utpathagam yathandham
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
If someone is ignorant and addicted to the path of samsara, how can one who is actually learned, merciful and advanced in spiritual knowledge engage him in fruitive activity and thus further entangle him in material existence? If a blind man is walking down the wrong path, how can a gentleman allow him to continue on his way to danger? How can he approve this method? No wise or kind man can allow this.