The prohibition of proposing marriage when one's brother has already proposed, unless he gives permission or gives up the idea
وَحَدَّثَنَاهُ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَلِيُّ بْنُ مُسْهِرٍ، عَنْ عُبَيْدِ اللَّهِ، بِهَذَا الإِسْنَادِ.
Narrated Ibn Umar : The above hadith has been narrated by Ibn Umar through another chain.