Maliks Muwatta Book 51, Hadith Number 13.

Yahya related to me from Malik from Abdullah ibn Abd ar-Rahman ibn Mamar from Abu’l-Hubab Said ibn Yasar that Abu Hurayra said, “The Messenger of Allah, may Allah bless him and grant him peace, said, ‘Allah, the Blessed, the Exalted, will say on the Day of Rising, “Where are those who loved each other for My majesty? Today I will shade them in My shade on the day when there is no shade except My shade.'”