"ለአንተም በርሱ ዕውቀት የሌለህን ነገር አትከተል (አረጋግጥ) ።
And follow not (O man i.e., say not, or do not or witness not, etc.) that of which you have no knowledge (e.g. one's saying: I have seen, while in fact he has not seen, or I have heard, while he has not heard).