Is it obligatory to repeat a voluntary prayer if one prayed it while forgetting that he had not performed ablution?
Machine translationRead the Arabic original
Question:
May Allah reward you, Honorable Shaykh. This questioner says: If a person prays a voluntary prayer and, after finishing it, remembers that he was not in a state of ablution, is the question whether he must repeat that prayer or not?
Answer:
It is not obligatory for him to repeat it because it is a voluntary prayer. However, if he desires good and the reward, he should perform ablution and pray in its place. It is not a repetition of it, but a replacement for it.
May Allah reward you, Honorable Shaykh. This questioner says: If a person prays a voluntary prayer and, after finishing it, remembers that he was not in a state of ablution, is the question whether he must repeat that prayer or not?
Answer:
It is not obligatory for him to repeat it because it is a voluntary prayer. However, if he desires good and the reward, he should perform ablution and pray in its place. It is not a repetition of it, but a replacement for it.
Source
قناة «العلامة الدكتور صالح الفوزان»، هل يجب إعادة النافلة لمن صلاها ناسيًا أنه لم يتوضأ؟ لمعالي الشيخ صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.