The Messenger of Allah (ﷺ) said: One should not sit between two men except with their permission.
Sunan Abi Dawud Book 43, Hadith 72
← Previous Hadith The Prophet (ﷺ) said: Glorifying Allah involves showing honour to a grey-haired Muslim and to one who can expound the Qur'an, but not to one who acts extravagantly regarding it, or turns away from it, and showing honour to a just ruler.

Sunan Abi Dawud Book 43, Hadith 71 Next Hadith → The Messenger of Allah (ﷺ) said: It is not lawful for a man to separate two persons except with their permission.

Sunan Abi Dawud Book 43, Hadith 73