(40) باب التَّرْغِيبِ فِي الْجُلُوسِ فِي الْمَسْجِدِ وَانْتِظَارِ الصَّلاَةِ
Sahl As-Sa'idi, may Allah be pleased with him, said:
"I heard the Messenger of Allah (ﷺ) say: 'Whoever is in the Masjid waiting for the prayer, he is in a state of prayer.'"
Reference: Sunan an-Nasa'i 734
In-book reference: Book 8, Hadith 47
English translation: Vol. 1, Book 8, Hadith 735