As he lay on his deathbed between the twin Sal Trees, the Buddha’s parting words were: “Be your own light, be your own refuge, the Dharma is your light and refuge. Things naturally decay: win through by mindfulness!”
After reading Jayarava’s very thorough discussion of the last sentence above, from the Pali words given in the Mahāparinibbāna Sutta, I thought I would produce my own re-rendering, designed for accessibility and usefulness. Jayarava raises many points about the meanings of the various terms, and his suggested translations are different from the above; he has not checked my rendering. It is well worth reading his whole blog entry.