5.2 The Blessed Lord said Renunciation and the Yoga of action both lead to the highest bliss; but of the two, the Yoga of action is superior to the renunciation of action.
English Translation Of Sri Shankaracharya's Sanskrit Commentary By Swami Gambirananda
5.2 Ubhau, both, to be sure; sannyasah, renunciation of actions; ca, and; karma-yogah, Karma-yoga-their performance-; nihsreyasa-karau, lead to Liberation. Though both lead to Liberation by virtue of being the cause of the rise of Knowledge, even then, tayoh, between the two which are the causes of Liberation; Karma-yoga, tu, however; visisyate, excels; karma-sannyasat, over mere renunciation of actions.
Thus He extols Karma-yoga. [Karma-yoga is better than renunciation of actions that is not based on Knowledge.]
Why? In answer the Lord says:
