Can I do qurbani by asking my brother to do it in Pakistan and I give him the money for qurbani after a week. if not, plz. tell
In order for you to do the Qurbani, you must own the animal at the time of slaughter. Hence, in order to do a sacrifice in the way you have described, you must purchase the animal on credit from your brother and then pay him afterwards. (Ahsanul Fatawa vol. 7 pg.513).
And Allah knows best,
Mufti Waseem Khan