Musnad Ahmad 937:57

Husayn narrated to us, Shayban narrated to us, from Mansur, from Rib'i, from Kharashah ibn al-Hurr, from al-Ma'rur ibn Suwayd, from Abu Dharr, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "I have been given the concluding verses of Surat al-Baqarah from a treasure house from beneath the Throne, and no prophet before me was given them."