Action Shall be Judged According to your intention-Hadith 1.

Two men were walking on a street when a woman crossing the road asked to be carried across as she had injured her leg. One of the men agreed to carry her while the other reprimanded him for touching her saying its forbidden to touch a woman who is not related to you. The  man ignored him and carried the woman across and forgot about it. A little while later his friend told him he should not have helped the woman across as in doing so he had committed a sin. The man calmly turned around and told his friend "I did what I had to do and have forgotten about it but you are still thinking of her in your thoughts in an unpious manner. That is a sin".