Hazrat Ibn Abbas (Allah be pleased with him) narrated that: Holy Prophet (Sallallahu Alaihi Wa Sallam) himself said:

رأيت ربي تبارك وتعالى

I saw my Lord, (Allah) Tabaraka Wa Ta'ala.

[Al Musnad-Imam Ahmad Bin Hambal, 386/4, #2634]