"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.'"  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا أَبَقَ الْعَبْدُ لَمْ تُقْبَلْ لَهُ صَلاَةٌ 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).  

عَنِ النَّبِيِّ ﷺ إِذَا أَبَقَ الْعَبْدُ لَمْ تُقْبَلْ لَهُ صَلاَةٌ وَإِنْ مَاتَ مَاتَ كَافِرًا وَأَبَقَ غُلاَمٌ لِجَرِيرٍ فَأَخَذَهُ فَضَرَبَ عُنُقَهُ  

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

إِذَا أَبَقَ الْعَبْدُ إِلَى أَرْضِ الشِّرْكِ فَلاَ ذِمَّةَ لَهُ