Commentary for Bava Batra 32:17
ודילמא דרך חכמתן קא חשיב להו אלא מעתה (בראשית לה, כט) ויקברו אותו עשו ויעקב בניו מאי טעמא לא חשיב להו דרך חכמתן אלא מדאקדמיה אדבורי אדבריה ומדאדבריה שמע מינה תשובה עבד בימיו
And whence do we know that Ishmael repented while Abraham was still alive? — From the discussion which took place between Rabina and R. Hama b. Buzi when they were once sitting before Raba while he was dozing. Said Rabina to R. Hama b. Buzi: Do your people really maintain that wherever the term 'giving up the ghost' [gewi'ah] is used in connection with the death of any person, it implies that that person died righteous? That is so, he replied. But what then of the generation of the Flood?<span class="x" onmousemove="('comment',' Of which it is written, And all flesh gave up the ghost (wa-yigwa'), Gen. VII, 21. ');"><sup>31</sup></span> [he asked.] We only make this inference, he replied, if both, 'giving up the ghost' and 'gathering in' are mentioned. But, he rejoined, what of Ishmael, who is said both to have 'given up the ghost' and 'been gathered in'?<span class="x" onmousemove="('comment',' Gen. XXV, 17. ');"><sup>32</sup></span>