The Long Āgama Sūtra 1.13

1.13

佛告諸比丘：「諦聽！諦聽！善思念之，吾當為汝分別解說。」時，諸比丘受教而聽。

The Buddha told the monks, “Listen closely! Listen closely, and consider it well. I’ll discern and explain it for you.” The monks then accepted the teaching and listened.