Hudhaifah bin Al-Yaman (May Allah be pleased with him) reported:
Whosoever takes seat in the midst of an assembly has been cursed by Messenger of Allah (ﷺ) The Messenger of Allah curses the one who sits in the middle of people's circle.[Abu Dawud]. (IT)
App reference (IT): Book 5, Hadith 17 (IT)
Arabic/English book reference (IT): Book 5, Hadith 830 (IT)