Musnad Ahmad 1153:1116

Hushaym narrated to us, Mughirah informed us, from al-Sha'bi, from Aisha, who said: "When the Messenger of Allah (peace and blessings of Allah be upon him) would be slow to receive news, he would recite the verse of Tarafa: 'And news will come to you from one whom you did not provide with provisions.'"