بُلُوغُ الْمَرَامِ
Bulugh al-Maram 943
Business Transactions
وَعَنْ عَبْدِ اَلرَّحْمَنِ بْنِ عُثْمَانَ التَّيْمِيِّ - رضى الله عنه - { أَنَّ اَلنَّبِيَّ - صلى الله عليه وسلم -نَهَى عَنْ لُقَطَةِ اَلْحَاجِّ } رَوَاهُ مُسْلِم ٌ [1] .
Narrated 'Abdur-Rahman bin 'Uthman at-Taimi (RA): The Prophet (ﷺ) prohibited taking what a pilgrim has dropped (lost). [Reported by Muslim].
Sunnah.com reference: Book 7, Hadith 204