What should one do if he is unsure whether he prostrated once or twice?
Machine translationRead the Arabic original
Question:
May Allah reward you, Your Eminence. The questioner says: If a person praying forgets whether he prostrated for forgetfulness once or twice, what should he do in that case?
Answer:
He prostrates twice. If he is unsure whether he prostrated once or twice, he acts on certainty, counting it as one prostration and completing the second, then he prostrates for forgetfulness when he concludes the prayer. He prostrates for forgetfulness. Yes, he acts on certainty and prostrates for forgetfulness when he concludes the prayer. Yes.
May Allah reward you, Your Eminence. The questioner says: If a person praying forgets whether he prostrated for forgetfulness once or twice, what should he do in that case?
Answer:
He prostrates twice. If he is unsure whether he prostrated once or twice, he acts on certainty, counting it as one prostration and completing the second, then he prostrates for forgetfulness when he concludes the prayer. He prostrates for forgetfulness. Yes, he acts on certainty and prostrates for forgetfulness when he concludes the prayer. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، [310- 4717] من شك هل سجد سجدة أو سجدتين فماذا يفعل؟ - الشيخ صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.