Sforno on Genesis 42:1/ספורנו על בראשית מ״ב:א׳

1וירא...למה תתראו?. Why are you looking at one another as if each one of you hopes that another one would go to buy food? Our sages (Eyruvin 3) have said קדרא דבי ששותפי לא חמימה ולא קררא, an ancient way of saying that “too many cooks spoil the broth.” The conjugation hitpael, i.e. the reflexive conjugation, occurs with the root ראה also in Kings II 14,8 נתראה פנים, “let us confront each other.”