σιτία εἰς ἀμίδα μὴ ἐμβάλλειν → cast not pearls before swine, do not throw pearls before swine
cassum cassi N N :: empty/vain/futile things (pl.)
cassum¹⁶ (cassus), n. pris advt, sans motif : Sen. Herc. Œt. 352.