It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: None of you should sell over the sale of his brother, nor should he send a marriage proposal over the proposal of his brother, unless he is granted permission.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 6088
Hadith Gradingحکم دارالسلام:إسناده صحيح ، م: 1412.