Rabbi Baruch Bodenheim: Monday Night Gemara Shiur Bava Metzia 21A to 21B Amar Leiy Hahu MiDiRabanan… (07/30/2012)

Learn Gemara 31a “Amar lei …” (5 lines into the big wide lines) until 31b “Hashev Tashiv” (10th line from top of Amud)
Questions; The Gemara says on bottom of 31a that one has to help load & unload someone else’s animal because the animal is in pain. Contradiction to Gemara a few lines before that says there is no “Tzar Baalei Chaim” if one refuses to help load someone else’s animal? Ritva 31a “Aval”
The Gemara on top of 31b says a person is only required to help load & unload someone else’s animal if the owner is there. Contradiction to the Gemara 31a which learnt from the double language of the Pasuk that one is required to help load & unload even if the owner is not there? Tofos 31b “Aval”