Bhagavad-gītā 4.17
BG 4.17
Open the full passageकर्मणो ह्यपि बोद्धव्यं बोद्धव्यं च विकर्मणः । अकर्मणश्च बोद्धव्यं गहना कर्मणो गतिः ॥१७॥
Sanskrit
karmaṇo hy api boddhavyaṁ boddhavyaṁ ca vikarmaṇaḥ akarmaṇaś ca boddhavyaṁ gahanā karmaṇo gatiḥ
Translation
The intricacies of action are very hard to understand. Therefore one should know properly what action is, what forbidden action is, and what inaction is.