Chapter: Prohibition Of Saying The Atamah Prayer (Prayer Of Darkness)
It was narrated that Ibn 'Umar said: I heard the Messenger of Allah say: 'Do not let the Bedouin make you change the name of your prayer. It is the 'Isha', and they bring their camels in and milk them at nightfall.'
It was narrated from Abu Hurairah that: The Prophet said: Do not let the Bedouins make you change the name of your prayer. Ibn Harmalah added: Rather it is the 'Isha', but they say the 'Atamah because they bring their camels in for milking at that time (when it is dark).