The story of Shariputra finding the Dharma and the famous Om ye dharma hetu mantra.
“Whatever arises must cease.”
The three seals of impermanence, dukkha, and emptiness or not-self form the basis for understanding all the Buddha’s teachings.
Understanding the First Noble Truth.
To fully understand dukkha we have to be aware of dukkha, acknowledge it, feel it, and sit with it.