Arabs conquered a territory which is "now" a part of Punjab (but was not a part of Punjab back then). In other words, the Arabs never conquered Punjab. So, next time before making such claims, please do read a little bit about the history of the region. Thank You
A weak Hadith ?? A weak attempt ? Are you sure ??
This Hadith has been narrated by both, Bukhari and Muslim and there is an absolute consensus among the Sunni scholars regarding the authenticity of this Hadith:
The meat of onagers (“wild donkeys”) is permitted and the meat of domesticated donkeys is forbidden
And as these Ahadith were written/compiled 1200 years ago in Arabia, this proves beyond any doubt that not only were there donkeys in Arabia, the Arabs (your ancestors) used to domesticate donkeys and also consumed their meat.