عَنْ اِبْنِ مَسْعُودٍ رضى الله عنه
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«لَا يَحِلُّ دَمُ اِمْرِئٍ مُسْلِمٍ; يَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اَللَّهُ، وَأَنِّي رَسُولُ اَللَّهِ، إِلَّا بِإِحْدَى ثَلَاثٍ: اَلثَّيِّبُ اَلزَّانِي، وَالنَّفْسُ بِالنَّفْسِ، وَالتَّارِكُ لِدِينِهِ; اَلْمُفَارِقُ لِلْجَمَاعَةِ»
“The blood of a Muslim who testifies that none has the right to be worshipped but Allah and that I am His Messenger, cannot be shed lawfully, except in three cases: a married person who committed adultery, in Qisas (retaliation) for murder (life for life) and the apostate from Islam who abandons the Muslim Jamaah (community).” Agreed upon.
Bulugh al-Maram 1345, Book 9, Crimes (Qisas or Retaliation), Hadith 1. 1 min read