If one forgets and says, "Allah hears [the praise of] whoever praises Him," instead of the takbir, and then performs the takbir, what is required of him?

The questioner:
The questioner says: In one of the prayers, I said, "Allah hears [the praise of] whoever praises Him," instead of the takbir. Then I realized it and immediately performed the takbir. Is it obligatory for me to perform the prostration for forgetfulness, or is that sufficient?

The Shaykh:
What?

The questioner:
He says: In one of the prayers, I said, "Allah hears [the praise of] whoever praises Him," instead of the takbir.

The Shaykh:
At what point did he say, "Allah hears [the praise of] whoever praises Him"?

The questioner:
I believe it was during the prostration, because he says, "Then I realized it and immediately performed the takbir."

The Shaykh:
That is fine. As long as he performed the takbir, this is a prescribed phrase that he recited in the wrong place, so it does not invalidate the prayer, and he performed the takbir.