Volume 1, Book 11, Number 598:
Narrated Anas bin Malik:
“When the Mu’adhdhin pronounced the Adhan, some of the companions of the Prophet would
proceed to the pillars of the mosque (for the prayer) till the Prophet arrived and in this way they
used to pray two Rakat before the Maghrib prayer. There used to be a little time between the Adhan
and the Iqama.” Shu’ba said, “There used to be a very short interval between the two (Adhan and
Iqama).”