(19) باب لُزُومِ الْمَسَاجِدِ وَانْتِظَارِ الصَّلاَةِ
It was narrated that 'Abdullah bin 'Amr said:
"We performed the Maghrib (prayer) with the Messenger of Allah, then those who went back went back, and those who stayed, stayed. Then the Messenger of Allah came back in a hurry, out of breath, with his garment pulled up to his knees, and said: 'Be of good cheer, for your Lord has opened one of the gates of heaven and is boasting of you before the angels, saying: "Look at My slaves; they have fulfilled one obligatory duty and are awaiting another."
Reference: Sunan Ibn Majah 801
In-book reference: Book 4, Hadith 67
English translation: Vol. 1, Book 4, Hadith 801