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
muslim:1515a – Yaḥyá b. Ayyūb And Qutaybah b. Saʿīd And Ibn Ḥujr > Ismāʿīl Wahū Ibn Jaʿfar > al-ʿAlāʾ from his father > Abū Hurayrah

A Muslim should not purchase (in opposition) to his brother.  

مسلم:١٥١٥a – حَدَّثَنَا يَحْيَى بْنُ أَيُّوبَ وَقُتَيْبَةُ بْنُ سَعِيدٍ وَابْنُ حُجْرٍ قَالُوا حَدَّثَنَا إِسْمَاعِيلُ وَهُوَ ابْنُ جَعْفَرٍ عَنِ الْعَلاَءِ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَسُمِ الْمُسْلِمُ عَلَى سَوْمِ أَخِيهِ  

See similar narrations below:

Collected by Muslim, Mālik, Suyūṭī
muslim:1413d – Yaḥyá b. Ayyūb And Qutaybah And Ibn Ḥujr > Ismāʿīl b. Jaʿfar > Ibn Ayyūb > Ismāʿīl > al-ʿAlāʾ from his father > Abū Hurayrah

The Muslim should not purchase in opposition to his brother, and he should not make the proposal of marriage on the proposal already made by his brother.  

مسلم:١٤١٣d – حَدَّثَنَا يَحْيَى بْنُ أَيُّوبَ وَقُتَيْبَةُ وَابْنُ حُجْرٍ جَمِيعًا عَنْ إِسْمَاعِيلَ بْنِ جَعْفَرٍ قَالَ ابْنُ أَيُّوبَ حَدَّثَنَا إِسْمَاعِيلُ أَخْبَرَنِي الْعَلاَءُ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَسُمِ الْمُسْلِمُ عَلَى سَوْمِ أَخِيهِ وَلاَ يَخْطُبْ عَلَى خِطْبَتِهِ  

malik:27-18 – Yaḥyá > Mālik > Ibn Shihāb > ʿAlī b. Ḥusayn b. ʿAlī > ʿUmar b. ʿUthmān b. ʿAffān > Usāmah b. Zayd

Yahya related to me from Malik from Ibn Shihab from Ali ibn Husayn ibn Ali from Umar ibn Uthman ibn Affan from Usama ibn Zayd that the Messenger of Allah ﷺ said, "A muslim does not inherit from a kafir."  

مالك:٢٧-١٨ – حَدَّثَنِي يَحْيَى عَنْ مَالِكٍ عَنِ ابْنِ شِهَابٍ عَنْ عَلِيِّ بْنِ حُسَيْنِ بْنِ عَلِيٍّ عَنْ عُمَرَ بْنِ عُثْمَانَ بْنِ عَفَّانَ عَنْ أُسَامَةَ بْنِ زَيْدٍ

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَرِثُ الْمُسْلِمُ الْكَافِرَ