Forgetfulness in Prayer

Malik :: Book 4 : Hadith 4.1.3

Yahya related to me from Malik that he had heard that a man questioned al-Qasim ibn Muhammad saying, "My imagination works in the prayer, and it happens to me a lot." Al-Qasim ibn Muhammad said, "Go on with your prayer, for it will not goaway from you until you goaway saying, 'I have not completed my prayer.' "