Sayyiduna Abu Umamah (may Allah be pleased with him) said that Sayyiduna Umar (may Allah be pleased with him) wrote to Sayyiduna Abu Ubaydah bin al-Jarrah (may Allah be pleased with him): Teach your boys swimming and teach your fighters archery. They used to go back and forth between the targets, and a stray arrow came and struck a boy and killed him; he was in the care of his maternal uncle, and his lineage was not known. The narrator said: Sayyiduna Abu Ubaydah (may Allah be pleased with him) wrote to Sayyiduna Umar (may Allah be pleased with him) asking him to whom he should give his blood money (diyah). Sayyiduna Umar (may Allah be pleased with him) replied that the Messenger of Allah (peace and blessings be upon him) used to say: "Allah and His Messenger (peace and blessings be upon him) are the guardian of one who has no guardian, and the maternal uncle will be the heir of one who has no heir."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الفرائض / 12208
Hadith Gradingمحدثین:حسن لغيره
Hadith Takhrij«حسن لغيره۔ احمد 1/ 28/ 189۔ ابن ماجه 2737»