B.G 2.59
viṣayā vinivartantē nirāhārasya dēhinaḥ। rasavarjaṁ rasōpyasya paraṁ dr̥ṣṭvā nivartatē ॥59॥
The interest in material topic retreats by fasting for the one with the body. But even that avoidance of taste for taste, i.e. passion for passion, disappears by seeing that Devine lord.
Gīta Bhāshya 2.59
By fasting, one can only control senses. Only with transcendental knowledge does the interest in material topics disappear. 'rasa' is used here to mean 'passion' in general, and not taste specifically.
na ca ētallakṣaṇaṁ jñānam ayatnatō api bhavati ityāha uttaraiḥ ślōkaiḥ।
The knowledge responsible for these characteristics does not come without effort is conveyed by the previous (three) verses.
nirāhāratvēna viṣayabhōgasāmarthyābhāva ēva bhavati। itaraviṣayākāṅkṣābhāvaḥ vā। rasākāṅkṣādiḥ na nivartatē। sa tu aparōkṣajñānādēva nivartatē ityāha - viṣayā iti।
By staying without food, one gets only the ability to control material pleasures. Interest is other material topics or the interest in taste does not disappear. That retreats only by the transcendental knowledge - is conveyed by 'viṣayā' verse.
"iṁdriyāṇi jayantyāśu nirāhārā manīṣiṇaḥ। varjayitvā tu rasanām asau rasyē ca vardhatē॥"
iti vacanāt bhāgavatē।
"The capable individuals win over the senses by abstaining from food. But, by staying away from the taste, their interest in taste only grows."
-states a proverb from Bhagavata Purana.
rasaśabdasya rāgavācakatvācca ॥59॥
'rasa' word is used here to convey passion (rāga).