Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
nasai-kubra:5774 – Asmaʿ > Ibn Wahb > ʿAmr b. al-Ḥārith > Bakr b. Sawādah > Abū Sālim al-Jayshānī > Zayd b. Khālid al-Juhanī

[Machine] On the authority of the Messenger of Allah ﷺ , he said, "Whoever takes something found is considered lost until he identifies it."  

الكبرى للنسائي:٥٧٧٤ – الْحَارِثُ بْنُ مِسْكِينٍ قِرَاءَةً عَلَيْهِ وَأَنَا أَسْمَعُ عَنِ ابْنِ وَهْبٍ قَالَ حَدَّثَنِي عَمْرُو بْنُ الْحَارِثِ عَنْ بَكْرِ بْنِ سَوَادَةَ عَنْ أَبِي سَالِمٍ الْجَيْشَانِيِّ عَنْ زَيْدِ بْنِ خَالِدٍ الْجُهَنِيِّ

عَنْ رَسُولِ اللهِ ﷺ قَالَ «مَنْ أَخَذَ لُقَطَةً فَهُوَ ضَالٌّ مَا لَمْ يُعَرِّفْهَا»  

See similar narrations below:

Collected by Muslim, Ibn Ḥibbān, Suyūṭī
muslim:1725 – Abū al-Ṭāhir And Yūnus b. ʿAbd al-Aʿlá > ʿAbdullāh b. Wahb > ʿAmr b. al-Ḥārith > Bakr b. Sawādah > Abū Sālim al-Jayshānī > Zayd b. Khālid al-Juhanī

He who found a stray article is himself led astray if he does not advertise it.  

مسلم:١٧٢٥ – وَحَدَّثَنِي أَبُو الطَّاهِرِ وَيُونُسُ بْنُ عَبْدِ الأَعْلَى قَالاَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ قَالَ أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ عَنْ بَكْرِ بْنِ سَوَادَةَ عَنْ أَبِي سَالِمٍ الْجَيْشَانِيِّ عَنْ زَيْدِ بْنِ خَالِدٍ الْجُهَنِيِّ

عَنْ رَسُولِ اللَّهِ ﷺ أَنَّهُ قَالَ مَنْ آوَى ضَالَّةً فَهُوَ ضَالٌّ مَا لَمْ يُعَرِّفْهَا  

ذِكْرُ إِثْبَاتِ اسْمِ الضَّالِّ عَلَى مَنْ لَمْ يُعَرِّفِ الضَّوَالَّ، إِذَا وَجَدَهَا

ibnhibban:4897 – Abū Yaʿlá > Hārūn b. Maʿrūf > Ibn Wahb > ʿAmr b. al-Ḥārith > Bakr b. Sawādah > Abū Sālim al-Jayshānī > Zayd b. Khālid al-Juhanī

[Machine] On the authority of the Messenger of Allah ﷺ , he said, "Whoever shelters a stray, he is considered as a stray until he identifies it."  

ابن حبّان:٤٨٩٧ – أَخْبَرَنَا أَبُو يَعْلَى قَالَ حَدَّثَنَا هَارُونُ بْنُ مَعْرُوفٍ قَالَ حَدَّثَنَا ابْنُ وَهْبٍ قَالَ أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ عَنْ بَكْرِ بْنِ سَوَادَةَ عَنْ أَبِي سَالِمٍ الْجَيْشَانِيِّ عَنْ زَيْدِ بْنِ خَالِدٍ الْجُهَنِيِّ

عَنْ رَسُولِ اللَّهِ ﷺ قَالَ «مَنْ آوَى ضَالَّةً فَهُوَ ضَالٌّ مَا لَمْ يُعَرِّفْهَا»