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
suyuti:25979a –
Request/Fix translation

  

السيوطي:٢٥٩٧٩a –

"لَا يَحِلُّ لِرَجُلٍ مُسْلِمٍ يَخْطُبُ عَلَى خِطْبَة أخيهِ حَتَّى يَتْرُكَ، وَلَا يَبيعُ عَلَى بَيعِ أَخِيهِ حَتَّى يَتْرُكَ".  

[حم] أحمد عن عقبة بن عامر

See similar narrations below:

Collected by Aḥmad
ahmad:17328 – Yaʿqūb from my father > Ibn Isḥāq > Yazīd b. Abū Ḥabīb > ʿAbd al-Raḥman b. Shimāsah al-Tujībī > ʿUqbah b. ʿĀmir

[Machine] I heard the Messenger of Allah ﷺ say, "It is not permissible for a Muslim to propose marriage to his brother's betrothed until he withdraws, nor is it permissible for him to sell to his brother's sale until he withdraws."  

أحمد:١٧٣٢٨ – حَدَّثَنَا يَعْقُوبُ قَالَ حَدَّثَنَا أَبِي عَنِ ابْنِ إِسْحَاقَ قَالَحَدَّثَنِي يَزِيدُ بْنُ أَبِي حَبِيبٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ شِمَاسَةَ التُّجِيبِيِّ عَنْ عُقْبَةَ بْنِ عَامِرٍ قَالَ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَا يَحِلُّ لِامْرِئٍ مُسْلِمٍ يَخْطُبُ عَلَى خِطْبَةِ أَخِيهِ حَتَّى يَتْرُكَ وَلَا يَبِيعُ عَلَى بَيْعِ أَخِيهِ حَتَّى يَتْرُكَ