Ajahn Brahm discusses the 67th sutta from the Majjhima Nikaya: Catuma Sutta, “At Catuma”.
“After dismissing some unruly monks, the Buddha is persuaded to relent, and teaches them four dangers for those gone forth,” Sutta Central.”
Sutta audios can be downloaded from Deeper Dhamma Podcast.
Teachings are available for downloading from the BSWA Podcast and Deeper Dhamma Podcast. Videos can be viewed on the BSWA Youtube Channel.