The Book of Oaths (qasamah), Retaliation and Blood Money
كتاب القسامة
Read the English translation first, with the original Arabic directly underneath.
The Description Of Killing That Resembles Intentional Killing, And Who Is To Pay The Diyah For A Fetus And For A Killing That Resembles Intentional Killing, And Mentioning The Different Wordings Reported In The Narration Of Ibrahim From 'Ubaid Bin Nudailah From Al-Mughirah
It was narrated that Abi Hassan said:
"Ali said: 'The Messenger of Allah did not tell me anything that he did not tell the people, except what is in a sheet in the sheath of my word.' They did not leave him alone until he brought out the sheet, and in it (were the words): 'The lives of the believers are equal in value, and they hasten to support the asylum granted by the least of them, and they are one against others. But no believer may be killed in return for a disbeliever, nor one with a covenant while his covenant is in effect."
الْمُؤْمِنُونَ تَكَافَأُ دِمَاؤُهُمْ يَسْعَى بِذِمَّتِهِمْ أَدْنَاهُمْ وَهُمْ يَدٌ عَلَى مَنْ سِوَاهُمْ لاَ يُقْتَلُ مُؤْمِنٌ بِكَافِرٍ وَلاَ ذُو عَهْدٍ فِي عَهْدِهِ