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לא יהיה לך. אִם עָשִׂיתָ כֵּן, לֹא יִהְיֶה לְךָ כְּלוּם (עי' שם): לא יהיה לך THOU SHALT NOT HAVE — This suggests: if YOU do so (if you have false weights), לא יהיה לך you will have nothing (you will become impoverished, being deprived of your property, as you have deprived others of theirs) (cf. Sifrei Devarim 294:3).