Abu Sa'eed narrated concerning His (Allah's) statement "And couches, elevated ..." (Al Wa'qiah 56:
34) that the Prophet (s.a.w) said:
"Their elevation is indeed like what is between the heavens and the earth, a distance of five-hundred years." (ID)
English reference (ID): Vol. 4, Book 12, Hadith 2540 (ID)
Arabic reference (ID): Book 38, Hadith 2736 (ID)