Key Verses

1. 8:13Al-AnfalCommand
   ذَٰلِكَ بِأَنَّهُمۡ شَآقُّواْ ٱللَّهَ وَرَسُولَهُۥۚ وَمَن يُشَاقِقِ ٱللَّهَ وَرَسُولَهُۥ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلۡعِقَابِ
   That is because they opposed Allah and His messenger. Whoso opposeth Allah and His messenger, (for him) lo! Allah is severe in punishment.
   In context

   What happened to the disbelievers, when they were killed and their limbs were struck, was because they went against Allah and His Messenger. They did not follow what they were instructed to do, and did not stop doing what they were told not to do.

2. 47:32MuhammadWarning
   إِنَّ ٱلَّذِينَ كَفَرُواْ وَصَدُّواْ عَن سَبِيلِ ٱللَّهِ وَشَآقُّواْ ٱلرَّسُولَ مِنۢ بَعۡدِ مَا تَبَيَّنَ لَهُمُ ٱلۡهُدَىٰ لَن يَضُرُّواْ ٱللَّهَ شَيۡـٔٗا وَسَيُحۡبِطُ أَعۡمَٰلَهُمۡ
   Lo! those who disbelieve and turn from the way of Allah and oppose the messenger after the guidance hath been manifested unto them, they hurt Allah not a jot, and He will make their actions fruitless.
   In context

   Those who reject Allah and His messenger, who abstain from Allah’s religion themselves and also prevent others from it, and who go against the Messenger and oppose him after it has become clear that he is a prophet, they do not harm Allah. They only harm themselves, and Allah will nullify their deeds.

3. 59:4Al-HashrCommand
   ذَٰلِكَ بِأَنَّهُمۡ شَآقُّواْ ٱللَّهَ وَرَسُولَهُۥۖ وَمَن يُشَآقِّ ٱللَّهَ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلۡعِقَابِ
   That is because they were opposed to Allah and His messenger; and whoso is opposed to Allah, (for him) verily Allah is stern in reprisal.
   In context

   Whatever happened to them happened because they took Allah and His Messenger as enemies through their disbelief and breaking of the treaties. And whoever takes Allah as his enemy, Allah is severe in punishment, so he will soon suffer His sever punishment.