Hazrat Abu Yahya narrates that Hazrat Ibn Abbas (may Allah be pleased with them) said regarding the verse: { فَإِنْ کَانَ مِنْ قَوْمٍ عَدُوٍّ لَکُمْ وَہُوَ مُؤْمِنٌ فَتَحْرِیرُ رَقَبَۃٍ مُؤْمِنَۃٍ }: A man used to come to the service of the Holy Prophet (peace and blessings be upon him), he accepted Islam and returned to his people. He was among his people, and his people were polytheists, when the Muslims mistakenly killed him in a raid or battle. So the one who killed him freed a slave, and regarding the verse: { وَإِنْ کَانَ مِنْ قَوْمٍ بَیْنَکُمْ وَبَیْنَہُمْ مِیثَاقٌ}, he (Ibn Abbas) said: That man was an ally and there was a treaty with his people, so blood money was paid to them and the one who killed him freed a slave.