The Ruling on Raising the Voice in the Quiet Prayers and Lowering the Voice in the Loud Prayers, and the Prostration for Forgetfulness
Machine translationRead the Arabic original
The questioner:
I say, Honorable Shaykh, may Allah grant you success: If the imam raises his voice in a prayer that is to be said quietly, or lowers his voice in a prayer that is to be said aloud, does that invalidate the prayer due to forgetfulness?
The Shaykh:
If he was forgetful, he prostrates for forgetfulness. If he was not forgetful but did it intentionally, his prayer is valid, because raising the voice and lowering the voice are connected to the prayer.
The questioner:
Honorable Shaykh, may Allah grant you success.
The Shaykh:
As for the prostration for error, it is not obligatory but recommended. The prostration for error is recommended. If one leaves a recommended practice, it is recommended for him to prostrate for error, but it is not obligatory.
I say, Honorable Shaykh, may Allah grant you success: If the imam raises his voice in a prayer that is to be said quietly, or lowers his voice in a prayer that is to be said aloud, does that invalidate the prayer due to forgetfulness?
The Shaykh:
If he was forgetful, he prostrates for forgetfulness. If he was not forgetful but did it intentionally, his prayer is valid, because raising the voice and lowering the voice are connected to the prayer.
The questioner:
Honorable Shaykh, may Allah grant you success.
The Shaykh:
As for the prostration for error, it is not obligatory but recommended. The prostration for error is recommended. If one leaves a recommended practice, it is recommended for him to prostrate for error, but it is not obligatory.
Source
شرح زاد المستقنع [17] — alfawzan.live (1:25:31)
The Arabic text is a machine transcription of the audio recording.