A man of Banu Asad narrates from his father that Sayyiduna Hudhayfah (may Allah be pleased with him) reserved for himself the land of Kisra and the land of the family of Kisra, and the land of those whose land Kisra had reserved for himself, and the land of those killed in the fighting and of those who fled, and the reed-thickets and the marshlands where water collects.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18372