In this Uposatha reflection Tahn Pamutto relates the story of MN 89 – a sutta relating the last conversation of King Pasenadi, a devout follower of the Buddha, as he enumerates those things he sees in the Buddha, Dhamma, and Sangha which inspire faith and confidence in him. These things, called the Monuments of the Dhamma, have stood the test of time.
MN 89: Dhammacetiyasutta—Bhikkhu Sujato (suttacentral.net)