9:5When the Sacred Months have passed, kill the polytheists wherever you find them. And capture them, and besiege them, and lie in wait for them at every ambush. But if they repent, and perform the prayers, and pay the alms, then let them go their way. God is Most Forgiving, Most Merciful.

9:111God has purchased from the believers their lives and their properties in exchange for Paradise. They fight in God’s way, and they kill and get killed. It is a promise binding on Him in the Torah, and the Gospel, and the Quran. And who is more true to his promise than God? So rejoice in making such an exchange—that is the supreme triumph.