It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings of Allah be upon him) said: "None of you should make someone get up from his place and then sit there himself; rather, make room and spread out."
Hadith Referenceالادب المفرد / كتاب المجالس / 1140
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه البخاري ، كتاب الاستئذان : 6270 و مسلم : 2177 و الترمذي : 2749»