Tosefta do Samuela II 20:22

A group of [Jews] to whom gentiles say, “Give us one of you and we shall kill him, and if not, behold, we will kill all of them”; they should let themselves be killed and not deliver them one soul from Israel. But if they designated [the person] to them – for example, Sheva ben Bichri – they should give him to them and not let themselves be killed. Rabbi Yehuda said, “When do these words apply? In a case when he is [inside and they are] outside [a fortified city]; but in a case when he is inside and they are inside, since he will be killed and the [other Jews] will be killed, they should give him to them and not let themselves all be killed. And so did it state (II Samuel 20:22), ‘And the woman came to all of the people in her wisdom, etc.’ – she said to them, ‘Since he will be killed and you will be killed, give him to them and do not kill all of you.’” Rabbi Shimon says, “So did she say [to them], ‘Anyone who rebels against the monarchy [of the House of David] is liable to [receive] the death penalty.’”