[Machine] The Messenger of Allah ﷺ said, "Whoever performs an extra voluntary deed and then becomes uncertain, if he wishes he can replace it and if he wishes he can leave it. But if it was a vow, then he must replace it."
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «مَنْ أَهْدَى تَطَوُّعًا ثُمَّ ضَلَّتْ فَإِنْ شَاءَ أَبْدَلَهَا وَإِنْ شَاءَ تَرَكَ وَإِنْ كَانَتْ فِي نَذْرٍ فَلْيُبَدِّلْ»
[Machine] From the Messenger of Allah ﷺ who said, "Whoever performs voluntary prayers and then becomes lost (confused), he may choose (to continue) or he may leave them. And if it (the confusion) is due to a vow, then he should fulfill it (by continuing the prayers). Al-Qarqasani narrated it from Al-Awza'i, and it contradicted the consensus in its wording."
عَنْ رَسُولِ اللهِ ﷺ قَالَ مَنْ أَهْدَى تَطَوُّعًا ثُمَّ ضَلَّتْ فَإِنْ شَاءَ أَبْدَلَهَا وَإِنْ شَاءَ تَرَكَ وَإِنْ كَانَتْ فِي نَذْرٍ فَلْيُبَدِّلْ وَرَوَاهُ الْقَرْقَسَانِيُّ عَنِ الْأَوْزَاعِيِّ فَخَالَفَ الْجَمَاعَةَ فِي مَتْنِهِ
"مَنْ أَهْدَى تَطَوعًا ثُمَّ ضَلَّتْ، فَإِنْ شَاءَ أَبْدَلَهَا، وَإِنْ شَاءَ تَرَكَ وَإنْ كَانَ في نَذْرٍ فَليُبْدِلْ".