Aññindriyasutta

sn48.23:1.1 “Mendicants, there are these three faculties.

sn48.23:1.2 What three?

sn48.23:1.3 The faculty of understanding that enlightenment is imminent. The faculty of enlightenment. The faculty of one who is enlightened.

sn48.23:1.4 These are the three faculties.”