If one says in his prostration, while forgetting: "Glory be to my Lord, the Most Great," does he have to perform the prostrations of forgetfulness?
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Question:
Honorable Shaykh, may Allah grant you success, he says: Is there a prostration for forgetfulness? For example, if one says in the prostration of the prayer, "Glory be to my Lord, the Most Great,"
Answer:
It is recommended that if one says a prescribed phrase in a place where it is not prescribed, he should perform the prostration of forgetfulness; this is a recommendation, not an obligation. Yes.
Honorable Shaykh, may Allah grant you success, he says: Is there a prostration for forgetfulness? For example, if one says in the prostration of the prayer, "Glory be to my Lord, the Most Great,"
Answer:
It is recommended that if one says a prescribed phrase in a place where it is not prescribed, he should perform the prostration of forgetfulness; this is a recommendation, not an obligation. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، [645 -3022] من قال في سجوده ناسيا: "سبحان ربي العظيم" ، هل عليه سجدتي السهو؟ - الشيخ صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.