I was once listening to a shiur and the Rabbi said how when one eats/drinks something warm/hot for Melave Malka, it will help to rebuild one’s "bones" during Techiyat Hametim. I completely forgot where he said the source was from. Can you please tell me where I can find it from?

Shalom, The source for the importance of eating a meal on Motzie Shabbat - a Melave Malka meal - can be found in the Shulchan Aruch, Orech Haim, 300. The source in the Talmud is Shabbat 119b. The mention of the bone that "eats" from this meal and from which the revival of the dead will occur, can be found in the Mishna Brurah (300, 2) in the name of the Kadmonim (Eliyah Raba). Blessings, D. Sperling