(537) بَابُ التَّوَسُّعِ فِي الْمَجْلِسِ
Ibn 'Umar reported that the Prophet, may Allah bless him and granthim peace, said, "None of you should make a man rise from his seat andthen sit in it. Rather make room and spread out."
Reference: Al-Adab Al-Mufrad 1140
In-book reference: Book 46, Hadith 5
English translation: Book 46, Hadith 1140