Abdullah bin Umar reported,

The Messenger of Allah ﷺ said, "None of you should sell against the sale of his brother."

Bukhari 2139

Sahih

حدثنا إسماعيل قال حدثني مالك عن نافع

عن عبد الله بن عمر رضي الله عنهما

أن رسول الله ﷺ قال لا يبيع بعضكم على بيع أخيه

البخاري 2139صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Sales
Chapter
One should not sell over his brother's sale nor offer a price over his brother's offer, until he gives him permission or leaves
Numbering
Darussalam 2139
Bukhari 2139