Arjuna said to Lord Krishna that 'Manna'is so powerful even more powerful than the wind, then how can I control it for doing my satvic karmas. The reply was : "With practice, Arjuna" Another example, A nephew informed his uncle that his daughter is being spoiled by few well known friends, please take action so that the worst may be avoided. The uncle refused to believe his nephew and just abused him stopped him to say any thing more about his daughter. Time passed. One day the nephew went to his uncle and asked for boon with pardon as pre-condition. Uncle agreed and gave him a boon to ask for any thing of his choice. Nephew asked for sex with him. The result you can imagine. Abuses and blows from uncle to the nephew. Nephew left without hue & cry. Few days passed and he again asked for the boon to be fulfilled. Again the same scene was created. Nephew left and returned after a few day again and & again repeated. At the tenth time, the uncle was a bit submissive and offered him to do what he wanted. This was the time. He became a vctor. He told his uncle. If you can agree to this hateful act, how can your daughter resist the offers from the unwanted males. These two examples are, I think enough. When you have set sails for voyage, you have to be prepared first and face all the difficulties on your way to reach your destination. This is how Islam is approaching the co-religious people and trying to win them through arguments and precedences and necessities of Islamisation.