عَنْ أَبِي قَتَادَةَ السَّلَمِيِّ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ: إِذَا دَخَلَ أَحَدُكُمُ الْمَسْجِدَ فَلْيَرْكَعْ رَكْعَتَيْنِ قَبْلَ أَنْ يَجْلِسَ.
Hazrat Abu Qatada Al-Salamira narrates that Allah’s Messengersa said, “Whenever one of you enters the mosque, let him perform two rak‘ahs before sitting down.”
(Sahih al-Bukhari, Kitab as-salah, Bab idha dakhala l-masjida fa-l-yarka‘ rak‘atayn, Hadith 444)