Halakhah zu Bereschit 36:12

Tosafot support their assertion by citing examples of outstanding batei din, such as those of Yehoshua²⁸According to the Midrash (see also Megillah 14b), Yehoshua accepted Rachav as a convert. and Hillel (Shabbat 31a), who accepted sincere geirim. Although the individuals who came to him were hardly viable candidates for conversion at first – one of them denied the validity of the oral law - Hillel was confident that with patience and wisdom he would be able to shepherd them to full acceptance of Torah, an expectation that he fulfilled. Moreover, Tosafot cite the example of Timnah (Breishit 36:12) who, according to Chazal (Sanhedrin 99b), was unjustifiably denied conversion by our Avot (forefathers). Out of bitterness, she agreed to be a concubine to Eisav’s son Elifaz and bore Amaleik, who perpetually inflicts great pain upon Israel.