I hope you can provide me with clear refernce exactly where in Bhagwad Gita it is said so. I have read the book several time over not to find such a reference. There are 18 chapters, please tell me at least in which chapter it says so.
In Mahabharat Sri Krishna told Bhim & Bhim alone to do what you mentioned. We see no Bhim or Shri Krishna here. As a matter of fact these Yadavs don't even come close to Duryodhan or Sakuni. May be they are equivalent to those vultures fed upon Duryoudhan & Sakuni's spit etc.