יָגַעְתָּ וּפָתַחְתָּ- יְגַע וּסְתֹם

ביטוי (אנגלית)

You labored and opened; labor and close it

הגדרה (אנגלית)

As you took the trouble to make the opening, so you must now take the trouble to close it. Figuratively: if you labored to do something for your own benefit that causes harm to others, you must restore things to their previous state so that no damage is caused.

("A case of a man who opened his windows onto the courtyard of the partners, and he came before Rabbi Yishmael bar Rabbi Yosei. He said to him: You have exerted yourself, my son; you have exerted yourself. And he came before Rabbi Ḥiyya, who said: You labored and opened; labor and close it" - Bava Batra 59b)