´Narrated 'Amr bin Shu'aib:` from his father, from his grandfather that the Messenger of Allah (ﷺ) said: "The Muslim is not killed for disbeliever." And with this chain, it has been narrated that the Prophet (ﷺ) said: "The blood-money paid for disbeliever is half of the blood-money paid for a believer."
Hadith Referenceسنن ترمذي / كتاب الديات عن رسول الله صلى الله عليه وسلم / 1413
´Aishah narrated from Judamah bint Wahb Al-Asadiyyah that she heard the Messenger of Allah (S.A.W) saying:` "I intended to prohibit Al-Ghilah until I remembered that the Persians and Romans do that, without any harm to their children."
Hadith Referenceسنن ترمذي / كتاب الطب عن رسول اللَّهِ صلى الله عليه وسلم / 2077