impure

I want to ask about the incident of a Muslim cab driver refusing to allow a blind woman accompanied by a guide dog into his cab. Do Islamic teachin gs forbid any contact with dogs? Is the cab driver's behavior mandated by Islam?

Dear scholars, As-Salamu `alaykum. One of my friends is still in the Israeli prisons. He asks if he can perform Prayer in his garments given the fact that such garments are contaminated with the blood of his fellow Palestinians whose lives he, in vain, tried to save. He finds no pure garment to put on, and he also lacks means to wash his garment or purify it. Jazakum Allah khayran.