Complex sentence: Muhammad changed the direction of prayer for Muslims after a revelation from Allah, both groups traditionally regarded the location of the stone as the holiest spot on Earth, the site of the Holy of Holies during the Temple Period.
Split into simpler sentences: Muhammad changed the direction of prayer for Muslims after a revelation from Allah. Both groups traditionally regarded the location of the stone as the holiest spot on Earth, the site of the Holy of Holies during the Temple Period.