Re: I was talking to a Sikh........
chintu, according to Quran and Muslim Belief (no matter how absurd it sounds to you) is that oneness of God in the universe is the basic foundation over which good deeds can be built, so it one does not believe on the oneness of God he is not among those who are liked by God (Allah).
Mother Teresa may have been a terrific person or may have been a media inspired celebrity who knows but she did not believe on the oneness of God so her matter resides with Allah and he has vowed that he will not forgive such people who forget him.
about OBL, he belives in his oneness OK granted and he may be a terrorsit or a media inspired demon who knows, again his matter rests with Allah, he may follow Mother teresa or not i am definitely not the judge.
to me Islam is what will be my fate, i am sure i will be so worried about my fate on the judgement day that i will not be looking to see what happened to ssing challenge. That is between him and Allah.
MaY Allah guide all of us on the right path