בְּזֹ֖את תִּבָּחֵ֑נוּ חֵ֤י פַרְעֹה֙ אִם־תֵּצְא֣וּ מִזֶּ֔ה כִּ֧י אִם־בְּב֛וֹא אֲחִיכֶ֥ם הַקָּטֹ֖ן הֵֽנָּה׃
Dengan inilah kamu akan diuji: demi hidup Firaun, kamu tidak akan keluar dari tempat ini, kecuali adikmu yang bungsu datang ke sini.
Rashi
חי פרעה BY THE LIFE OF PHARAOH — If Pharaoh lives! Whenever he swore for the sake of appearance (literally, falsely) he swore by Pharaoh’s life (Genesis Rabbah 91:7).
Sforno
בזאת תבחנו, if he is not your brother, the youngest one of whom you spoke will not endanger his own life to come with you and to share your fate of the death penalty.
Or HaChaim
בזאת תבחנו, "You will be tested as follows:" Joseph expressed readiness to put their words to the test by the yardstick they themselves had provided, although this was not sufficient proof for their claim that they had come to Egypt to obtain the release of their brother.