“Whoever is guided is only guided to his own good. Whoever is misguided is only misguided to his detriment. No burden-bearer can bear another’s burden.” So much for assuming the burden of someone else’s sins! There can be no question of doing that. “We never punish until We have sent a Messenger.” A Mahdi.
But when the Mahdi comes, Allah will punish them, to bring them to heel. Our Prophet (saas) is the greatest.