Narrated Abdullah ibn Amr ibn al-As: The Messenger of Allah ﷺ said: It is not lawful for a man to separate two persons except with their permission.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
It is not permissible to forcefully intrude between two Muslims who are already sitting together and to separate them by doing so; causing discord between two brothers is an even greater offense.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 4845