sn52.1:9.3 ajjhattabahiddhā dhammesu samudayadhammānupassī viharati … ajjhattabahiddhā dhammesu vayadhammānupassī viharati … ajjhattabahiddhā dhammesu samudayavayadhammānupassī viharati ātāpī sampajāno satimā, vineyya loke abhijjhādomanassaṁ.