Dīgha ii. 348-349.
In olden times two dicers played at dice. The first dicer swallowed every ace. The second dicer saw that dicer swallow every ace. Seeing, he said this to that dicer: “You, sir, have it all your own way. Give me the dice, sir; I must hurry away.” “Yes, sir,” said that dicer, and handed over the dice to that dicer.
Now that dicer painted the dice with poison, and said this to that dicer: “Come, sir, let us play at dice.” “Yes, sir,” said that dicer in assent to that dicer.
A second time also those dicers played at dice; a second time also that dicer swallowed every ace. The second dicer saw that dicer swallow for the second time also every ace. Seeing, he said this to that dicer:
Smeared with the strongest poison
Was the die the man swallowed, but knew it not.
Swallow, O swallow, wicked dicer!
Later it will taste bitter to you.
B. Uncanonical version.
Jātaka 91: i. 379-380.