How to be merciful towards the believers and harsh towards the disbelievers
18-3-2009 | IslamWeb
Question:
Asalaamu Caleykum Waraxmatullahi,
Dear Sheikh, Jazakallahu Khair for all that you have dont to educate the Ummah. My question is as for me a teenager living if a kufr country like Canada. How can I be more merciful towards the believers and harsh towards the kuffars. Please give me tips. I really want to be those who will be successfull in this world and in the hereafter. Do no forget the make dua for me !!!!
May Allah Gather us together on the Day of Judgement along with the Prophets, The Truth Tellers, The Martyrs, and The Righteous. ALLAHUMA AMEEN
Answer:
All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad 
is His slave and Messenger.
First of all, may Allaah reward you and preserve your religion and morals, and make you among the successful in this life and in the Hereafter.
Among the best things by which mercy towards the believers could be achieved is to preserve the meaning of brotherhood with them on the basis of the Saying of Allaah (what means): {The believers are nothing else but brothers (in Islamic religion)}[Quran 49:10] Therefore, a Muslim should love the believers and endeavour to do good to them and benefit them according to his ability, and feel their sorrow and hardship, and support them, advise them, comfort them, and stand by their side at times of happiness and sadness.
As regards being harsh with the non-Muslims, then this requires hating them and not being loyal to them and hating the disbelief upon which they are.
With regard to dealing with them, it is permissible to be kind to the non-Muslims who are not at war with the Muslims, as this softens their heart towards Islam, and it is not permissible to be aggressive and unjust to them. For more benefit, please refer to Fatwa 88293.
Finally, it should be noted that residing in a non-Muslim country is very serious, so if there is no necessity for you in residing there, you are obliged to migrate to a Muslim country.
For more benefit, please refer to Fatwa 86405.
Allaah Knows best.