Deuteronomy 5:20

20 `Thou dost not answer against thy neighbour -- a false testimony.

Deuteronomy 5:20 In-Context

18 `Thou dost not commit adultery.
19 `Thou dost not steal.
20 `Thou dost not answer against thy neighbour -- a false testimony.
21 `Thou dost not desire thy neighbour's wife; nor dost thou covet thy neighbour's house, his field, and his man-servant, and his handmaid, his ox, and his ass, and anything which [is] thy neighbour's.
22 `These words hath Jehovah spoken unto all your assembly, in the mount out of the midst of the fire, of the cloud, and of the thick darkness -- a great voice; and He hath not added, and He writeth them on two tables of stone, and giveth them unto me.
Young's Literal Translation is in the public domain.