Abu Hurairah reported,
By Allah, were it not for two verses in the Book of Allah Almighty, I would never have narrated anything from him, meaning from the Prophet ﷺ. Were it not for Allah's words, "Indeed, those who conceal what Allah has revealed of the Book" [Baqarah 2:159], to the end of the two verses.
Ibn Majah 262
Sahihحدثنا أبو مروان العثماني محمد بن عثمان حدثنا إبراهيم بن سعد عن الزهري عن عبد الرحمن بن هرمز الأعرج أنه سمع
أبا هريرة يقول
والله لولا آيتان في كتاب الله تعالى ما حدثت عنه يعني عن النبي ﷺ شيئا أبدا لولا قول الله {إن الذين يكتمون ما أنزل الله من الكتاب} إلى آخر الآيتين
No references are available.
Bukhari narrated it in "Cultivation and Sharecropping," in the chapter "What Has Been Mentioned About Planting," Hadith 2350, from the hadith of Ibn Saad and others. Muslim also narrated it in "The Virtues of the Companions," in the chapter "The Virtues of Abu Hurairah Dawsi" 
, Hadith 2492, with different wording, from the hadith of Zuhri through the same chain.