Dutiyasaṁyojanasutta
Sāvatthiyaṁ viharati. “Seyyathāpi, bhikkhave, telañca paṭicca vaṭṭiñca paṭicca telappadīpo jhāyeyya. Tatra puriso kālena kālaṁ telaṁ āsiñceyya vaṭṭiṁ upasaṁhareyya. Evañhi so, bhikkhave, telappadīpo tadāhāro tadupādāno ciraṁ dīghamaddhānaṁ jaleyya. Evameva kho, bhikkhave, saṁyojaniyesu dhammesu assādānupassino viharato taṇhā pavaḍḍhati. Taṇhāpaccayā upādānaṁ …pe… evametassa kevalassa dukkhakkhandhassa samudayo hoti.
Fetters (2nd)
At Sāvatthī. “Mendicants, suppose an oil lamp depended on oil and a wick to burn. And from time to time someone would pour oil in and adjust the wick. Fed and fuelled by that, the oil lamp would burn for a long time. In the same way, there are things that tighten the fetters. When you concentrate on the gratification provided by these things, your craving grows. Craving is a requirement for grasping. … That is how this entire mass of suffering originates.