344. hadíth
قَالَ اَلنَّبِيُّ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ: «سُمِّيَتِ اَلْكَعْبَةُ كَعْبَةً لِأَنَّهَا وَسَطُ اَلدُّنْيَا ».
The Prophet (peace and blessings be upon him and his family) said: "The Ka'bah was named 'Ka'bah' because it is the center of the world."