Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Jnana-Karma-Sanyasa Yoga Chapter 4, Verse 4.17.
Sanskrit
कर्मणो ह्यपि बोद्धव्यं बोद्धव्यं च विकर्मणः । अकर्मणश्च बोद्धव्यं गहना कर्मणो गतिः ॥ ४.१७ ॥
Hindi
कर्मका स्वरूप भी जानना चाहिये और अकर्मका स्वरूप भी जानना चाहिये तथा विकर्मका स्वरूप भी जानना चाहिये; क्योंकि कर्मकी गति गहन है|
English
One should know the principle of Karma (action) Akarma (inaction) and forbidden Karma, (forbidden action). The philosophy behind Karma is very deep and mysterious. So listen closely.