Sahih Muslim | Book 40 | Hadith Number 6806

Narrated by Abu Bakr b. Abu Musa b. Qais
This hadith has been transmitted on the authority of Abu Bakr b. Abu Musa b. Qais who, on the authority of his father, reported the Apostle (may peace be upon him) to have said that there would be a tent made of a pearl whose height towards the sky would be sixty miles. In each corner, there would be a family of the believer, out of sight for the others.