[30] See Encyclopedia Talmudit, vol. 2, pp.137-140, s.v. “afke’inho rabbanan le-kiddushin minei.” See the famous teshuva of Rabbi Shalom Mordechai Schwadron, Teshuvoth Marsham (Warsaw, 1902), Vol 1, responsum 9. See also the Collected Responsa of Rabbi Yitzchak HaLevi Herzog, Even Ha-Ezer vol 2, (Jerusalem, 1967) no. 17-19, pp. 74-82.
[31] Also in the case of the biblical commandment to destroy the nation of Amalek and the seven nations of ancient Canaan at the time that Joshua conquered the land, the Sages found ways to nullify this law and declared it inoperative by claiming that these nations no longer exist. (See Mishnah Yadayim, 4:4; Mishneh Torah, Hilchot Melachim 5:4 and Minchat Chinuch by Rabbi Yoseph Babad, Mitzvah: 604.) However, the biblical text indicates that these nations once did exist and were partially destroyed – including women and children – by the Israelites. We have to wonder whether these stories really happened or whether they are purely figurative. Or, that perhaps only the males were killed. Most interesting is the observation in Yoma 22b where Rabbi Mani states that King Shaul argued with God why the Amalekite children had to be killed for the sins of their fathers. King Shaul argued with God as Avraham did when God wanted to destroy Sedom and Amora (Bereishit 18:20-33).