It is better not to eat meat or drink wine or to do anything to cause your brother to stumble.
Καλὸν τὸ μὴ φαγεῖν κρέα, μηδὲ πιεῖν οἶνον, μηδὲ ἐν ᾧ ὁ ἀδελφός σου προσκόπτει ἢ σκανδαλίζεται ἢ ἀσθενεῖ.