Sunan an-Nasa'i 3242

Arabic

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا غُنْدَرٌ، عَنْ هِشَامٍ، عَنْ مُحَمَّدٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ لاَ يَخْطُبْ أَحَدُكُمْ عَلَى خِطْبَةِ أَخِيهِ ‏"‏ ‏.‏

Translation

It was narrated from Abu Hurairah that the Prophet said:"None of you should propose marriage to a woman when someone else has already proposed to her

→ Narrated by Abu Hurairah

Reference