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
ibnmajah:2121 – ʿAmr b. Rāfiʿ > Hushaym > ʿAbdullāh b. Abū Ṣāliḥ from his father > Abū Hurayrah

"Your oath is as your companion understands it to be."  

ابن ماجة:٢١٢١ – حَدَّثَنَا عَمْرُو بْنُ رَافِعٍ حَدَّثَنَا هُشَيْمٌ أَنْبَأَنَا عَبْدُ اللَّهِ بْنُ أَبِي صَالِحٍ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ يَمِينُكَ عَلَى مَا يُصَدِّقُكَ بِهِ صَاحِبُكَ  

See similar narrations below:

Collected by Muslim, Aḥmad, Dārimī, Ḥākim, Suyūṭī
muslim:1653a – Yaḥyá b. Yaḥyá And ʿAmrw al-Nāqid > Yaḥyá > Hushaym b. Bashīr > ʿAbdullāh b. Abū Ṣāliḥ > ʿAmr > Hushaym b. Bashīr > ʿAbdullāh b. Abū Ṣāliḥ from his father > Abū Hurayrah

Your oath should be about something regarding which your companion will believe you. 'Amr said: By which your companion will believe you.  

مسلم:١٦٥٣a – حَدَّثَنَا يَحْيَى بْنُ يَحْيَى وَعَمْرٌو النَّاقِدُ قَالَ يَحْيَى أَخْبَرَنَا هُشَيْمُ بْنُ بَشِيرٍ عَنْ عَبْدِ اللَّهِ بْنِ أَبِي صَالِحٍ وَقَالَ عَمْرٌو حَدَّثَنَا هُشَيْمُ بْنُ بَشِيرٍ أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ أَبِي صَالِحٍ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ يَمِينُكَ عَلَى مَا يُصَدِّقُكَ عَلَيْهِ صَاحِبُكَ وَقَالَ عَمْرٌو يُصَدِّقُكَ بِهِ صَاحِبُكَ  

ahmad:7119 – Hushaym b. Bashīr > ʿAbdullāh b. Abū Ṣāliḥ Dhakwān from his father > Abū Hurayrah

"Your oath is as your companion understands it to be." (Using translation from Ibn Mājah 2121)  

أحمد:٧١١٩ – أَخْبَرَنَا هُشَيْمُ بْنُ بَشِيرٍ أَخْبَرَنَا عَبْدُ اللهِ بْنُ أَبِي صَالِحٍ ذَكْوَانُ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ يَمِينُكَ عَلَى مَا يُصَدِّقُكَ بِهِ صَاحِبُكَ  

darimi:2394 – ʿUthmān b. Muḥammad > Hushaym > ʿAbdullāh b. Abū Ṣāliḥ from his father > Abū Hurayrah

"Your oath is as your companion understands it to be." (Using translation from Ibn Mājah 2121)  

الدارمي:٢٣٩٤ – أَخْبَرَنَا عُثْمَانُ بْنُ مُحَمَّدٍ حَدَّثَنَا هُشَيْمٌ أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ أَبِي صَالِحٍ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ «يَمِينُكَ عَلَى مَا يَصْدُّ قَكَ بِهِ صَاحِبُكَ»  

hakim:7834 – Abū Bakr b. Isḥāq > Muḥammad b. ʿĪsá b. al-Sakan al-Wāsiṭī > ʿUmar b. ʿAwn > Hushaym > ʿAbdullāh b. Abū Ṣāliḥ from his father > Abū Hurayrah

"Your oath is as your companion understands it to be." (Using translation from Ibn Mājah 2121)   

الحاكم:٧٨٣٤ – حَدَّثَنَا أَبُو بَكْرِ بْنُ إِسْحَاقَ أَنْبَأَ مُحَمَّدُ بْنُ عِيسَى بْنِ السَّكَنِ الْوَاسِطِيُّ ثَنَا عُمَرُ بْنُ عَوْنٍ ثَنَا هُشَيْمٌ أَنْبَأَ عَبْدُ اللَّهِ بْنُ أَبِي صَالِحٍ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ «يَمِينُكَ عَلَى مَا يُصَدِّقُكَ بِهِ صَاحِبُكَ» صحيح إن شاء الله