Messenger of Allah ﷺ said, "A pious slave gets a double reward." Abu Huraira added: By Him in Whose Hands my soul is but for Jihad (i.e. holy battles), Hajj, and my duty to serve my mother, I would have loved to die as a slave.

قَالَ رَسُولُ اللَّهِ ﷺ لِلْعَبْدِ الْمَمْلُوكِ الصَّالِحِ أَجْرَانِ وَالَّذِي نَفْسِي بِيَدِهِ لَوْلاَ الْجِهَادُ فِي سَبِيلِ اللَّهِ وَالْحَجُّ وَبِرُّ أُمِّي لأَحْبَبْتُ أَنْ أَمُوتَ وَأَنَا مَمْلُوكٌ