Umar bin Abdul Aziz, may Allah have mercy on him, ordered that the Coptic slaves who escaped from the captivity of the polytheists and came to Beirut by ship should be given that ship and the goods and belongings present in it as a reward, except for the khums (one-fifth).
Hadith Referenceسنن سعید بن منصور / كتاب الجهاد / 3888