Bhagavad Gita · Chapter 18: Freedom through Renunciation

Bhagavad Gita 18.67

idaṃ te nātapaskāya nābhaktāya kadācana | na cāśuśrūṣave vācyaṃ na ca māṃ yo'bhyasūyati ||

You must never speak of this to someone who has no discipline or devotion, nor to someone who does not want to listen, nor to someone who speaks ill of me.

Modern context

Do not share this teaching with those who have no discipline, no devotion, no wish to listen, or who scorn it. This is not snobbery but wisdom. Teaching that is forced on unwilling ears is wasted, or worse, becomes a target for mockery. The deepest truths are best shared with those who are ready to receive them.