It is narrated from Asim bin Damrah (may Allah have mercy on him) that a man from Banu Ru'as found a purse. He brought the purse to Sayyiduna Ali (may Allah be pleased with him) and said: "I found money in it, and I have announced it, but no one has recognised it, and I began to wish that no one would come to recognise it." Sayyiduna Ali (may Allah be pleased with him) said: "Give it in charity. If its owner comes and is pleased with the charity, the reward will be his; otherwise, you must pay it (the money) to him, and the reward will be yours."
Asim bin Damrah is not strong. We have narrated from Sayyiduna Ali (may Allah be pleased with him), attributed to the Prophet (marfu'), that consuming it is permissible, and we have narrated it through authentic connected chains from the Prophet (peace and blessings be upon him); and the established Sunnah of the Messenger of Allah (peace and blessings be upon him) is more deserving of being followed. And success is from Allah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب اللقطة / 12062