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 his brother’s sale, nor should he send a marriage proposal over his brother’s proposal.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 6060
Hadith Gradingحکم دارالسلام:إسناده صحيح ، خ: 5142، م: 1412.