Allah Almighty says: "Or has he not been informed of what is in the scriptures of Musa (peace be upon him), and of Ibrahim (peace be upon him), who fulfilled (his covenant)?" [Surah al-Najm: 36-37]
Imam al-Shafi'i (may Allah have mercy on him) said: "The recitation of the Book of Ibrahim (peace be upon him) is not known." And he mentioned the Zabur of Dawud (peace be upon him) and said: "And indeed it (the Qur'an) is in the scriptures of the former peoples." [Surah al-Shu'ara: 196]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجزية / Q18649