Bhagavatapurana 7.15.18

7.15.18

santuṣṭaḥ kena vā rājan na vartetāpi vāriṇā /
aupasthyajaihvyakārpaṇyādgṛhapālāyate janaḥ //

18. O king, with what cannot a contented man get on, say even with water? (*i.e.*, A contented man can get on with any simple means, even with mere water). People behave like the dog on account of their desire to gratify the sense of touch or of taste.