It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Benefit from this House (the House of Allah) as much as you can (that is, perform tawaf and worship abundantly), for it has been demolished twice, and the third time it will be lifted up (to the heavens)." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it.