Musannaf Ibn Abi Shayba 33:37

'Affan narrated to us, he said: Hammad bin Salamah narrated to us, from 'Ali bin Zayd, from al-Ahnaf bin Qays: From Dawud (David) the Prophet, peace be upon him, who said: "O Lord, the Children of Israel ask You by Ibrahim (Abraham), Ishaq (Isaac), and Ya'qub (Jacob), so make me, O Lord, a fourth for them." He said: So Allah revealed to him: "O Dawud, Ibrahim was cast into the fire for a matter, and he was patient, and that was a trial that did not befall you. And Ishaq offered his soul to be slaughtered, and he was patient for My sake, and that was a trial that did not befall you. And Ya'qub, I took his beloved one until his eyes turned white, and that was a trial that did not befall you."