Once Yehudah b. Tabbai entered a ruin, where he found a man in his death throes, the knife dripping blood in the hand of the murderer — to whom he said "May '—' come upon me if neither I nor you killed him; but what can I do (to you) when the Torah has written (Devarim 20:15) 'By word of two witnesses shall a thing be established!' But the Omniscient One will exact punishment of that man (i.e., 'you')." He had hardly finished speaking before a snake bit him and he died.