Anas b. Malik reported Allah's Messenger (ﷺ) as saying:My Cistern would be as extensive as the distance between Aila and San'a, of Yemen, and there would be in it jugs like stars in the sky.
وَحَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، أَنَّحَدَّثَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " قَدْرُ حَوْضِي كَمَا بَيْنَ أَيْلَةَ وَصَنْعَاءَ مِنَ الْيَمَنِ وَإِنَّ فِيهِ مِنَ الأَبَارِيقِ كَعَدَدِ نُجُومِ السَّمَاءِ " .
Muslim
The Book of Virtues • Hadith 55