The Prophet ﷺ said: One of you must not ask a woman in marriage when his brother has done so already, and one of you must not sell (his own goods) when his brother has already sold (his goods) except with his permission. (Using translation from Abū Dāʾūd 2081)

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «لَا يَخْطُبُ أَحَدُكُمْ عَلَى خِطْبَةِ أَخِيهِ وَلَا يَبِيعُ عَلَى بَيْعِ أَخِيهِ حَتَّى يَأْذَنَ لَهُ»

[AI] "I heard the Messenger of Allah ﷺ say, 'It is not permissible for a believer in Allah and the Last Day to sell a transaction that has already been sold by his brother until he leaves it.'"

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «لَا يَحِلُّ لِامْرِئٍ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ أَنْ يَبِيعَ عَلَى بَيْعِ أَخِيهِ حَتَّى يَتْرُكَهُ»

[AI] I heard the Messenger of Allah ﷺ say, "It is not permissible for a person to sell over the sale of his brother until he leaves it."

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَا يَحِلُّ لِامْرِئٍ يَبِيعُ عَلَى بَيْعِ أَخِيهِ حَتَّى يَذَرَهُ

[AI] I heard the Messenger of Allah ﷺ say, "It is not permissible for a Muslim to propose marriage to his brother's betrothed until he withdraws, nor is it permissible for him to sell to his brother's sale until he withdraws."

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَا يَحِلُّ لِامْرِئٍ مُسْلِمٍ يَخْطُبُ عَلَى خِطْبَةِ أَخِيهِ حَتَّى يَتْرُكَ وَلَا يَبِيعُ عَلَى بَيْعِ أَخِيهِ حَتَّى يَتْرُكَ