Musannaf Ibn Abi Shayba 26:559

Waki’ narrated to us, he said: Ali ibn Mubarak narrated to us, from Yahya ibn Abi Kathir, from Muhammad ibn Abd al-Rahman ibn Thawban, that a man from Jurhum died in al-Sarah and left behind wealth. So, they wrote to Umar regarding it. Umar wrote to al-Sham, but they did not find a single person remaining from Jurhum. So, Umar distributed his inheritance among the people in whose midst he had died.