رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 220
The Book of Miscellany
Unlawfulness of Oppression and Restoring Others Rights
وَعَنِ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: “ لَا يَزَالَ الْمُؤْمِنُ فِي فُسْحَةٍ مِنْ دِينِهِ مَا لَمْ يُصِبْ دَمًا حرًا" ((رَوَاهُ الْبُخَارِيّ)).
Ibn 'Umar (May Allah bepleased with them) reported: Messenger of Allah (ﷺ) said, "A believer continues to guard his Faith (and thus hopes for Allah's Mercy) so long as he does not shed blood unjustly". [Al-Bukhari].
Riyad as-Salihin, 220