None amongst you should outbid another in a transaction, nor should he make proposals of marriage upon the proposal made by someone else. (Using translation from Muslim 1412a)
سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَا يَبِيعُ بَعْضُكُمْ عَلَى بَيْعِ بَعْضٍ وَلَا يَخْطُبُ بَعْضُكُمْ عَلَى خِطْبَةِ بَعْضٍ
None amongst you should outbid another in a transaction, nor should he make proposals of marriage upon the proposal made by someone else.
عَنِ النَّبِيِّ ﷺ قَالَ لاَ يَبِعْ بَعْضُكُمْ عَلَى بَيْعِ بَعْضٍ وَلاَ يَخْطُبْ بَعْضُكُمْ عَلَى خِطْبَةِ بَعْضٍ
That the Messenger of Allah ﷺ said: "None of you is to sell over the sale of others, nor to propose over the proposal of others." [He said:] There are narration on this topic from Abu Hurairah and Samurah.
عَنِ النَّبِيِّ ﷺ قَالَ لاَ يَبِيعُ بَعْضُكُمْ عَلَى بَيْعِ بَعْضٍ وَلاَ يَخْطُبُ بَعْضُكُمْ عَلَى خِطْبَةِ بَعْضٍ قَالَ وَفِي الْبَابِ عَنْ أَبِي هُرَيْرَةَ وَسَمُرَةَ
Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah ﷺ said, "Do not let any of you bid against each other."
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَبِعْ بَعْضُكُمْ عَلَى بَيْعِ بَعْضٍ
[Machine] According to the Messenger of Allah ﷺ , he said, "None of you should sell based on the sale of another, nor should anyone propose marriage to someone who has already been proposed to."
عَنْ رَسُولِ اللهِ ﷺ أَنَّهُ قَالَ لَا يَبِيعُ بَعْضُكُمْعَلَى بَيْعِ بَعْضٍ وَلَا يَخْطُبُ عَلَى خِطْبَةِ بَعْضٍ
"لا يَبِيع بَعْضُكُمْ عَلَى بَيع بَعْضٍ، وَلا يَخْطُب بَعْضُكُمْ عَلَى خِطبَةِ بَعْضٍ".