Maujam ul Buldan by Yaqoot Hamawi, v14, p238
Tareekh Khamees, v2, p88
Wafa-ul-Wafa by Noor-ud-Deen Al-Samhoodi, v4, page 1480
"Fadak is a city, which was situated 2 or 3 days of travel from Madina. There were wells of water and trees of dates in it. It was the same Fadak, about which...