وَعَنْ أَبِي قَتَادَةَ رضى الله عنه
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«إِذَا دَخَلَ أَحَدُكُمْ اَلْمَسْجِدَ فَلَا يَجْلِسْ حَتَّى يُصَلِّيَ رَكْعَتَيْنِ» مُتَّفَقٌ عَلَيْهِ. 11 صحيح
The Messenger of Allah (sallallahu alayhi wa sallam) said: “When one of you enters a mosque, he must not sit until he prays two Rakah.”.
Bulugh al-Maram 314, Book 2, The Book of Prayer, Hadith 135. 1 min read