Sahih Muslim 1048
Sahih Muslim · Book 12: The Book of Zakat · If the Son of Adam had two valleys, he would desire a third
Anas b. Malik reported Allah's Messenger (ﷺ) as saying:
وَحَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى ، أَخْبَرَنِي ابْنُ وَهْبٍ ، أَخْبَرَنِي يُونُسُ ، عَنِ ابْنِ شِهَابٍ ، عَنْ أَنَسِ بْنِ مَالِكٍ ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ قَالَ " لَوْ كَانَ لاِبْنِ آدَمَ وَادٍ مِنْ ذَهَبٍ أَحَبَّ أَنَّ لَهُ وَادِيًا آخَرَ وَلَنْ يَمْلأَ فَاهُ إِلاَّ التُّرَابُ وَاللَّهُ يَتُوبُ عَلَى مَنْ تَابَ " .
If there were two valleys of gold for the son of Adam, he would long for another one. and his mouth will not be filled but with dust, and Allah returns to him who repents.