[Machine] A man said, "O Messenger of Allah, should I try to find the lost item?" He replied, "Search for it and do not hide it or conceal it. If you find its owner, return it to him. Otherwise, the property of Allah is given to whomever He wills."  

رَجُلٌ يَا رَسُولًَ اللهِ اللُّقَطَةُ نَجِدُهَا؟ قَالَ انْشُدْهَا وَلَا تَكْتُمْ وَلَا تُغِيِّبْ فَإِنْ وَجَدْتَ رَبِّهَا فَادْفَعْهَا إِلَيْهِ وَإِلَّا فَمَالُ اللهِ يُؤْتِيهِ مَنْ يَشَاءُ  

“The Messenger of Allah ﷺ said: 'The lost animal of the Muslim may lead to the burning flame of Hell.' ” (Using translation from Ibn Mājah 2502)   

أَنَّ رَسُولَ اللهِ ﷺ قَالَ ضَالَّةُ الْمُسْلِمِ حَرْقُ النَّارِ