إِنَّمَا جَزَاءُ الَّذِينَ يُحَارِبُونَ اللَّـهَ وَرَسُولَهُ وَيَسْعَوْنَ فِي الْأَرْضِ فَسَادًا أَن يُقَتَّلُوا أَوْ يُصَلَّبُوا أَوْ تُقَطَّعَ أَيْدِيهِمْ وَأَرْجُلُهُم مِّنْ خِلَافٍ أَوْ يُنفَوْا مِنَ الْأَرْضِ ۚ ذَٰلِكَ لَهُمْ خِزْيٌ فِي الدُّنْيَا ۖ وَلَهُمْ فِي الْآخِرَةِ عَذَابٌ عَظِيمٌ ﴿٣٣﴾ إِلَّا الَّذِينَ تَابُوا مِن قَبْلِ أَن تَقْدِرُوا عَلَيْهِمْ ۖ فَاعْلَمُوا أَنَّ اللَّـهَ غَفُورٌ رَّحِيمٌ ﴿٣٤﴾

Innamaa jazaaa'ul-lazeena yuhaariboonallaaha wa Rasoolahoo wa yas'awna fil-ardi fasaadan an yuqattalooo aw yusallabooo aw tuqatta'a aideehim wa arjuluhum-min khilaafin aw yunfaw minal-ard; zaalika lahum khizyun fid-dunyaa wa lahum fil-Aakhirati 'azaabun 'azeem. Illal-lazeena taaboo min qabli an taqdiroo 'alaihim fa'lamooo annallaaha Ghafoorur-Raheem.

(33) Indeed, the penalty for those who wage war against Allah and His Messenger and strive upon earth [to cause] corruption is none but that they be killed or crucified or that their hands and feet be cut off from opposite sides or that they be exiled from the land. That is for them a disgrace in this world; and for them in the Hereafter is a great punishment, (34) Except for those who return [repenting] before you apprehend them. And know that Allah is Forgiving and Merciful.

Reference: Surah Al-Ma'ida 5: 33-34