신명기 24:16 미슈나 참조: Mishnah Sanhedrin

If one litigant said to the other, “I accept my father as trustworthy”, or “I accept your father as trustworthy”, or “I accept three herdsman as trustworthy”, Rabbi Meir says, “He may retract.” But the Sages say, “He cannot retract.” If one must take an oath before his fellow, and his fellow said to him, “Vow to me by the life of your head”, Rabbi Meir says, “He may retract.” But the Sages say, “He cannot retract.”

These are the relatives [that are not qualified to be witnesses or judges]: A suitor’s father, brother, father’s brother, mother’s brother, sister’s husband, father’s sister’s husband, mother’s sister’s husband, mother’s husband, father-in-law, or wife’s sister’s husband them and their sons and their sons-in-law; also the suitor’s step-son only [but not the stepsons’ sons]. Rabbi Yose said, “Such was the mishnah of Rabbi Akiva, but the first mishnah taught: ‘a suitor’s uncle, or his uncle’s son, and all that are qualified to be his heir. Moreover all that were kinsmen at the time [are disqualified]; but kinsmen that have ceased to be kinsmen become qualified.” Rabbi Judah says: “If a man’s daughter died and left children, her husband still counts as a kinsman.”