إِنَّمَا جَزَاءُ الَّذِينَ يُحَارِبُونَ اللَّهَ وَرَسُولَهُ وَيَسْعَوْنَ فِي الْأَرْضِ فَسَادًا أَنْ يُقَتَّلُوا أَوْ يُصَلَّبُوا أَوْ تُقَطَّعَ أَيْدِيهِمْ وَأَرْجُلُهُمْ مِنْ خِلَافٍ أَوْ يُنْفَوْا مِنَ الْأَرْضِ ۚ ذَٰلِكَ لَهُمْ خِزْيٌ فِي الدُّنْيَا ۖ وَلَهُمْ فِي الْآخِرَةِ عَذَابٌ عَظِيمٌ
The punishment of those who wage war against Allah and His Messenger, and strive with might and main for mischief through the land is: execution, or crucifixion, or the cutting off of hands and feet from opposite sides, or exile from the land: that is their disgrace in this world, and a heavy punishment is theirs in the Hereafter; 
إِلَّا الَّذِينَ تَابُوا مِنْ قَبْلِ أَنْ تَقْدِرُوا عَلَيْهِمْ ۖ فَاعْلَمُوا أَنَّ اللَّهَ غَفُورٌ رَحِيمٌ
Except for those who repent before they fall into your power: in that case, know that Allah is Oft-forgiving, Most Merciful.