Jami` at-Tirmidhi 2540
جامع الترمذي#2540Da'ifAbu 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiHasan
In-book reference: 38:18