'Abdullah bin Mas'ud said: "We were fighting a battle and the idolators kept us from praying Zuhr, 'Asr, Maghrib and 'Isha'. When the idolaters went away, the Messenger of Allah (S.A.W) commanded a caller to say Iqamah for Zuhr prayer, and we prayed. Then he said the Iqamah for 'Asr, and we prayed, and he said the Iqamah for Maghrib and we prayed, and he said the Iqamah for 'Isha' and we prayed. Then we went around among us and said: 'There is no group on Earth who is remembering Allah, the Mighty and Sublime, except you.'"