The Prophet ﷺ said: If anyone is killed blindly or, when people are throwing stones, by a stone or a whip, his blood-wit is the blood-wit for an accidental murder. But if anyone is killed intentionally, retaliation is due. If anyone tries to prevent it, the curse of Allah, of angels, and of all the people will rest on him.  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ قُتِلَ فِي عِمَّيَّا أَوْ رَمْيًا يَكُونُ بَيْنَهُمْ بِحَجَرٍ أَوْ بِسَوْطٍ فَعَقْلُهُ عَقْلُ خَطَإٍ وَمَنْ قُتِلَ عَمْدًا فَقَوْدُ يَدَيْهِ فَمَنْ حَالَ بَيْنَهُ وَبَيْنَهُ فَعَلَيْهِ لَعْنَةُ اللَّهِ وَالْمَلاَئِكَةِ وَالنَّاسِ أَجْمَعِينَ