صحيح مسلم
Sahih Muslim
كتاب النكاح
The Book of Marriage
باب تَحْرِيمِ الْخِطْبَةِ عَلَى خِطْبَةِ أَخِيهِ حَتَّى يَأْذَنَ أَوْ يَتْرُكَ:
Chapter: The prohibition of proposing marriage when one's brother has already proposed, unless he gives permission or gives up the idea
Hadith 1412
This hadith is listed as number 3457 in Maktaba Shamila
وحَدَّثَنِيهِ أَبُو كَامِلٍ الْجَحْدَرِيُّ ، حدثنا حَمَّادٌ ، حدثنا أَيُّوبُ ، عَنْ نَافِعٍ ، بِهَذَا الْإِسْنَادِ .
A hadith like this has been reported on the authority of Nafi' with the same chain of transmitters.
