Saccasaṃyutta

Dhammacakkappavattanasutta (The Discourse on Setting the Wheel of the Dhamma in Motion)14S5/12.2.1: the Bhagavā's first discourse, to the group of five bhikkhū at Isipatana: the two extremes and the Middle Way, the four realisations in three phases and twelve aspects, and Koṇḍañña's Dhamma Eye as the wheel of the Dhamma is set in motion.

Sīsapāvanasutta (The Discourse in the Siṃsapā Grove)14S5/12.4.1: with a few siṃsapā leaves in his hand at Kosambī, the Bhagavā shows the bhikkhū how much more he has understood than declared, and why he declared the four realisations alone.