552. hadíth
وَ قَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «أَسَاسُ اَلْبَيْتِ مِنَ اَلْأَرْضِ اَلسَّابِعَةِ اَلسُّفْلَى إِلَى اَلْأَرْضِ اَلسَّابِعَةِ اَلْعُلْيَا».
Imam Jafar ibn Muhammad Al-Sadiq (a.s) said: "The foundation of the House (Kaaba) extends from the seventh layer of the lower earth to the seventh layer of the upper earth."