Bulugh al-Maram 7 Business Transactions كتاب البيوع 168

وَعَنْ سَعِيدِ بْنِ زَيْدٍ – رضى الله عنه – عَنْ اَلنَّبِيِّ – صلى الله عليه وسلم -قَالَ: { مَنْ أَحْيَا أَرْضاً مَيْتَةً فَهِيَ لَهُ } رَوَاهُ اَلثَّلَاثَةُ, وَحَسَّنَهُ اَلتِّرْمِذِيُّ.

Narrated Sa’id bin Zaid (RA): The Prophet (صلى الله عليه وسلم) said: “If anyone makes a barren land productive, then it belongs to him.” [Reported by ath-Thalatha. at-Tirmidhi graded it Hasan (good)].