Śrīmad-Bhāgavatam · Text 11.8.20
Who is speaking and story frame
इन्द्रियाणि जयन्त्याशु निराहारा मनीषिण: ।
वर्जयित्वा तु रसनं तन्निरन्नस्य वर्धते ॥ २० ॥
indriyāṇi jayanty āśu
nirāhārā manīṣiṇaḥ
varjayitvā tu rasanaṁ
tan nirannasya vardhate
By fasting, learned men quickly bring all of the senses except the tongue under control, because by abstaining from eating such men are afflicted with an increased desire to gratify the sense of taste.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.