It is said that Hazrat Ali (PBUH)were going to a mosque and saw an elderly non-muslim walking.Hazrat Ali (PBUH)walked at the same pace the elderly non muslim was walking thinking that the elderly person must not take to his heart that he cannot walk fast beacuse of old age...i think this answers your doubts Mr Manmohan..this is the quality of Isalm,that muslims are ready to die for it even today..This is why it is the same Isalm which was 1400 yrs ago ..No changes like other religions which changed according to their societies