"The Messenger of Allah [SAW] said: 'If a slave runs away, no Salah will be accepted from him until he goes back to his masters.'" (Using translation from Nasāʾī 4049)  

قَالَ رَسُولُ اللهِ ﷺ «إِذَا أَبَقَ الْعَبْدُ لَمْ تُقْبَلْ لَهُ صَلَاةٌ حَتَّى يَرْجِعَ إِلَى مَوَالِيهِ»  

"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). (Using translation from Nasāʾī 4050)  

عَنِ النَّبِيِّ ﷺ «إِذَا أَبَقَ الْعَبْدُ لَمْ تُقْبَلْ لَهُ صَلَاةٌ وَإِنْ مَاتَ مَاتَ كَافِرًا» وَأَبَقَ غُلَامٌ لِجَرِيرٍ فَأَخَذَهُ فَضَرَبَ عُنُقَهُ  

"If a slave runs away to the land of Shirk, there is no protection (or immunity) for him." (Using translation from Nasāʾī 4051)  

«إِذَا أَبَقَ الْعَبْدُ إِلَى أَرْضِ الشِّرْكِ فَلَا ذِمَّةَ لَهُ»