Choni Hamagil Today

Taanit 23a:

One day he [Honi the Circle Drawer] was journeying on the road and he saw a man planting a carob tree; he asked him, How long does it take [for this tree] to bear fruit? The man replied: Seventy years. He then further asked him: Are you certain that you will live another seventy years? The man replied: I found [ready grown] carob trees in the world; as my forefathers planted these for me so I too plant these for my children. Honi sat down to have a meal and sleep overcame him. As he slept a rocky formation enclosed upon him which hid him from sight and he continued to sleep for seventy years. When he awoke he saw a man gathering the fruit of the carob tree and he asked him, Are you the man who planted the tree? The man replied: I am his grandson. Thereupon he exclaimed: It is clear that I slept for seventy years.