Ibn 'Umar reported that the Prophet, may Allah bless him and grant him peace, said, "None of you should make a man rise from his seat and then sit in it. Rather make room and spread out."  

قَالَ النَّبِيُّ ﷺ لاَ يُقِيمَنَّ أَحَدُكُمُ الرَّجُلَ مِنْ مَجْلِسِهِ ثُمَّ يَجْلِسُ فِيهِ وَلَكِنْ تَفَسَّحُوا وَتَوَسَّعُوا