Jarir used to narrate from the Prophet [SAW]:"If a slave runs away, no Salah will be accepted from him, and if he dies he will die a disbeliever." A slave of Jarir's ran away, and he caught him and struck his neck (killing him).
أَخْبَرَنَا مُحَمَّدُ بْنُ قُدَامَةَ، عَنْ جَرِيرٍ، عَنْ مُغِيرَةَ، عَنِ الشَّعْبِيِّ، قَالَ كَانَ جَرِيرٌ يُحَدِّثُ عَنِ النَّبِيِّ صلى الله عليه وسلم " إِذَا أَبَقَ الْعَبْدُ لَمْ تُقْبَلْ لَهُ صَلاَةٌ وَإِنْ مَاتَ مَاتَ كَافِرًا " . وَأَبَقَ غُلاَمٌ لِجَرِيرٍ فَأَخَذَهُ فَضَرَبَ عُنُقَهُ .
Nesai
The Book of Fighting [The Prohibition of Bloodshed] • Hadith 4050