Abdullah bin Umar reported,

The Messenger of Allah ﷺ said, "A person in the state of ihram must not marry, propose, or have a marriage proposed on his behalf. None of you should sell over the sale of his brother, nor propose over the proposal of his brother until he gives him permission."

Azami 6486

Sahih

عن ابن عمر

أن رسول الله ﷺ قال: لا ينكح المحرم ولا يخطب، ولا يخطب عليه، ولا يبع أحدكم على بيع أخيه، ولا يخطب على خطبة أخيه حتى يأذن له.

الأعظمي 6486صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Marriage
Chapter
Prohibited marriages in Islam
Section
Prohibition of a Muharram marrying or proposing
Numbering
Jami al-Kamil 6486 (2nd edition)
Azami 6486