Digha Nikaya 1:1252
SUJATOevaṁ pasanno ahaṁ samaṇe gotame ‘pahoti me samaṇo gotamo tathā dhammaṁ desetuṁ, yathāhaṁ imaṁ kaṅkhādhammaṁ pajaheyyan’ti.
I am quite confident that the Buddha is capable of teaching me so that I can give up this state of uncertainty.