Therefore, O mighty-armed, one whose senses are restrained from their objects is certainly of steady intelligence.
Author Name:-Sri Ramanuja
2.68 Therefore, in the way described above, he whose mind is focussed on Me the auspicious object for meditation, and whose senses are thereby restrained from sense-objects in everyway, in his mind alone wisdom is firmly set. Sri Krsna now speaks of the state of attainment by one whose senses are subdued and whose mind is serene.
Author Name:-Sri Adi Shankaracharya
Sri Adi Shankaracharya
2.68 Since the evils arising from the activities of the organs have been described, tasmat, therefore; mahabaho, O mighty-armed one; tasya, his, the sannyasin’s; prajna, wisdom; pratisthita, becomes established; yasya, whose; indriyani, organs; sarvasah, in all their varieties, differentiated as mind etc.; nigrhitani, are withdrawn; indriya-arthebhyah, from their objects such as sound etc. In the case of a man of steady wisdom in whom has arisen discriminating knowledge, those which are these ordinary and Vedic dealings cease on the eradication of ignorance, they being effects of ignorance. And ignorance ceases because it is opposed to Knowledge. For clarifying this idea, the Lord says:
Author Name:-Sri Madhvacharya
Lord Krishna is declaring that only by control of the senses in all respects can wisdom be achieved.