श्रीमद् भगवद्गीता

English Translation of Abhinavgupta's Sanskrit Commentary By Dr. S. Sankaranarayan

3.17-19 Yas ca etc. upto purusah. However, for a person who rejoices in the Self and performs action simply as a [routine] business of organs of action, there is no difference between (his) action and nonaciton. That is why he inflicts punishment on, or does favour to, every being, not with desire for any gain for himself, but with a conviction that it a is thing that deserves to be performed. Therefore, just unattached, one should perform action that is to be performed.

English Translation of Ramanuja's Sanskrit Commentary By Swami Adidevananda

3.19 Therefore, considering that work has to be performed with detachment, you perform it, considering yourself a non-agent. This will be declared in the words 'with detachment' and 'which ought to be done,' meaning that one attains the Supreme by Karma Yoga itself.

English Translation By Swami Gambirananda

3.19 Therefore, remaining unattached, always perform the obligatory duty, for, by performing (one's) duty without attachment, a person attains the Highest.

English Translation Of Sri Shankaracharya's Sanskrit Commentary By Swami Gambirananda

3.19 Since this is so, therefore, asaktah, remaining unattached; samacara, perform; satatam, always; karyam, the obligatory; daily karma, duty; hi, for; acaran, by performing; (one's) karma, duty; asaktah, without attachment, by doing work as a dedication to God; purusah, a person; apnoti, attains; param, the Highest, Liberation, through the purification of the mind. This is meaning. And (you should perform your duty) for the following reason also: