Sahih Muslim , Book 31, Hadith 3 (In-Book) ⓘ
This hadith has been narrated on the authority of Rabi'a b. Abu Abd al-Rahman with the same chain of transmitters but with this addition: " There came a person to Allah's Messenger while I was with him, and he asked him about picking up of a stray article, and he said: When none comes to demand it, then spend that."
وَحَدَّثَنِي أَبُو الطَّاهِرِ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَخْبَرَنِي سُفْيَانُ الثَّوْرِيُّ، وَمَالِكُ، بْنُ أَنَسٍ وَعَمْرُو بْنُ الْحَارِثِ وَغَيْرُهُمْ أَنَّ رَبِيعَةَ بْنَ أَبِي عَبْدِ الرَّحْمَنِ، حَدَّثَهُمْ بِهَذَا الإِسْنَادِ، مِثْلَ حَدِيثِ مَالِكٍ غَيْرَ أَنَّهُ زَادَ قَالَ أَتَى رَجُلٌ رَسُولَ اللَّهِ صلى الله عليه وسلم وَأَنَا مَعَهُ فَسَأَلَهُ عَنِ اللُّقَطَةِ . قَالَ وَقَالَ عَمْرٌو فِي الْحَدِيثِ " فَإِذَا لَمْ يَأْتِ لَهَا طَالِبٌ فَاسْتَنْفِقْهَا " .
also referenced under: Hadith 1722 (Reference) & Book 18, Hadith 4274 (USC-MSA)