Bhikkhunupassayasutta

sn47.10:9.1 So, Ānanda, I’ve taught you directed development and undirected development.

sn47.10:9.2 Out of sympathy, I’ve done what a teacher should do who wants what’s best for their disciples.

sn47.10:9.3 Here are these roots of trees, and here are these empty huts. Practice absorption, Ānanda! Don’t be negligent! Don’t regret it later! This is my instruction to you.”