Sahih
Muslim
صحيح مسلم
16
The Book of Marriage
كتاب النكاح
Chapter 6: The prohibition of proposing marriage when one's brother has already proposed, unless he gives permission or gives up the idea
باب تَحْرِيمِ الْخِطْبَةِ عَلَى خِطْبَةِ أَخِيهِ حَتَّى يَأْذَنَ أَوْ يَتْرُكَ
Sahih Muslim 1412 c
Narrated Ibn Umar
The above hadith has been narrated by Ibn Umar through another chain.وَحَدَّثَنَاهُ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَلِيُّ بْنُ مُسْهِرٍ، عَنْ عُبَيْدِ اللَّهِ، بِهَذَا الإِسْنَادِ.
Grade: Sahih