If a man prays in a state of ritual impurity without knowing it and discovers it the next day, he must repeat the prayers.
Machine translationRead the Arabic original
The questioner : Shaykh, the Prophet (peace and blessings be upon him) prohibited praying two prayers in one day. So, if, for example, a person prayed the 'Asr prayer in a state of ritual impurity and saw it the next day, he will now repeat the prayers he performed while carrying the impurity. Does this fall under a prohibited matter here?
The Shaykh : What is the prohibited matter?
The questioner : Which is it, praying twice in one day, or what is its jurisprudential ruling?
The Shaykh : No, because there is no case of praying two valid prayers in one day.
The questioner: Yes.
The Shaykh : Then this rule is specified, as you know: if one sees a congregation and he had prayed alone, he then repeats the prayer and prays with them due to the occurrence of this circumstance.
The Shaykh : What is the prohibited matter?
The questioner : Which is it, praying twice in one day, or what is its jurisprudential ruling?
The Shaykh : No, because there is no case of praying two valid prayers in one day.
The questioner: Yes.
The Shaykh : Then this rule is specified, as you know: if one sees a congregation and he had prayed alone, he then repeats the prayer and prays with them due to the occurrence of this circumstance.
Source
www.al-albany.com
The Arabic text is copied verbatim from the original source, without any edits.