1 Kings 2:41-43

41Now Solomon was told that Shimei had gone from Jerusalem to Gath, and had returned.

42So the king sent word and called for Shimei and said to him, “Did I not make you swear by the Lord and solemnly warn you, saying, ‘Know for certain that on the day you leave [Jerusalem] and go anywhere, you shall surely die’? And you said to me, ‘The word (ruling) I have heard is good.’

43Why then have you not kept the oath of the Lord, and the command which I gave you?”