Tarunarukkhasutta 2.4

2.4

Evameva kho, bhikkhave, saṃyojaniyesu dhammesu assādānupassino viharato taṇhā pavaḍḍhati.

In the same way, there are things that tighten the fetters. When you concentrate on the gratification provided by these things, your craving grows.