首楞嚴義疏注經 2.26

2.26

The king said, 'World-Honoured One! Secretly shifting in transformation, I truly did not notice it; as cold and heat alternated and flowed, I gradually reached this point. Why is this? When I was twenty years old, though called young, my face and appearance had already aged compared to when I was at the beginning of ten; at thirty years of age, I had further declined compared to twenty; now at sixty, and two years past that, when I look back on when I was fifty, I seemed quite strong and robust. World-Honoured One! I see this secret shifting: though there is this demise and decline, the transitions in between may be demarcated by intervals of ten years.'