Musnad Ahmad 32:301

Bahz narrated to us, Sulayman ibn al-Mughirah narrated to us, from Thabit, Anas ibn Malik narrated to us, he said: Safiyyah became the share of Dihyah in his distribution, and he mentioned the like of it, except that he said: Until when he placed her behind him, he dismounted, then he set up a tent for her.