Mubarakpuri, Safi-ur Rahman (1996). The Sealed Nectar. Riyadh, გვ. 306.
Ibn Ishaq (trans. A Guillaume) (2004). The life of Muhammad. Oxford, გვ. 454. „The apostle and the polytheists remained twenty days and more, nearly a month, without fighting except for some shooting with arrows, and the siege.“
Ibn Ishaq (trans. A Guillaume) (2004). The life of Muhammad. Oxford, გვ. 450. „THE BATTLE OF THE DITCH, A.H.5 This took place in Shawwal, A.H.5.“
