that the Messenger of Allah ﷺ said: "A man has more right to his seat. If he leaves for some need of his, then he returns, then he has more right to his seat."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ الرَّجُلُ أَحَقُّ بِمَجْلِسِهِ وَإِنْ خَرَجَ لِحَاجَتِهِ ثُمَّ عَادَ فَهُوَ أَحَقُّ بِمَجْلِسِهِ