'Umar b. Khattab said that a person performed ablution and left a small part equal to the space of a nail (unwashed). The Apostle of Allah ﷺ saw that and said: Go back and perform ablution well. He then went back (performed ablution well) and offered the prayer.
أَنَّ رَجُلاً تَوَضَّأَ فَتَرَكَ مَوْضِعَ ظُفُرٍ عَلَى قَدَمِهِ فَأَبْصَرَهُ النَّبِيُّ ﷺ فَقَالَ ارْجِعْ فَأَحْسِنْ وُضُوءَكَ فَرَجَعَ ثُمَّ صَلَّى
A person came to the Messenger of Allah ﷺ. He performed ablution and left a small part equal to the space of a nail upon his foot. The Messenger of Allah ﷺ said to him : Go back and perform ablution well. Abu Dawud said: This tradition is not known through Jarir b. Hazim. It was transmitted only by Ibn Wahab. Another version adds the wording : “ Go back and perform the ablution well.”
أَنَّ رَجُلاً جَاءَ إِلَى النَّبِيِّ ﷺ وَقَدْ تَوَضَّأَ وَتَرَكَ عَلَى قَدَمَيْهِ مِثْلَ مَوْضِعِ الظُّفْرِ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ ارْجِعْ فَأَحْسِنْ وُضُوءَكَ
"The Messenger of Allah saw a man performing ablution and he missed a spot the size of a fingernail on his foot. He commanded him to repeat the ablution and his prayer, so he did."
رَأَى رَسُولُ اللَّهِ ﷺ رَجُلاً تَوَضَّأَ فَتَرَكَ مَوْضِعَ الظُّفْرِ عَلَى قَدَمِهِ فَأَمَرَهُ أَنْ يُعِيدَ الْوُضُوءَ وَالصَّلاَةَ قَالَ فَرَجَعَ
ʿGo back and do your wudoo’ properly.” So he went back and did wudoo’ then he prayed.
أَخْبَرَهُ أَنَّهُ رَأَى رَجُلًا تَوَضَّأَ لِلصَّلاةِ فَتَرَكَ مَوْضِعَ ظُفْرٍ عَلَى ظَهْرِ قَدَمِهِ فَأَبْصَرَهُ النَّبِيُّ ﷺ فَقَالَ ارْجِعْ فَأَحْسِنْ وُضُوءَكَ فَرَجَعَ فَتَوَضَّأَ ثُمَّ صَلَّى
ʿGo back and do your wudoo' properlyʿ So he went back and did wudoo', then he prayed.
أَخْبَرَهُ أَنَّ رَسُولَ اللهِ ﷺ رَأَى رَجُلًا تَوَضَّأَ لِصَلاةِ الظُّهْرِ فَتَرَكَ مَوْضِعَ ظُفُرٍ عَلَى ظَهْرِ قَدَمِهِ فَأَبْصَرَهُ رَسُولُ اللهِ ﷺ فَقَالَ ارْجِعْ فَأَحْسِنْ وُضُوءَكَ فَرَجَعَ فَتَوَضَّأَ ثُمَّ صَلَّى
'Umar b. Khattab said that a person performed ablution and left a small part equal to the space of a nail (unwashed). The Apostle of Allah ﷺ saw that and said: Go back and perform ablution well. He then went back (performed ablution well) and offered the prayer. (Using translation from Muslim 243)
أَنَّ رَجُلًا تَوَضَّأَ فَتَرَكَ مَوْضِعَ ظُفُرٍ عَلَى قَدْمِهِ فَأَبْصَرَهُ النَّبِيُّ ﷺ فَقَالَ ارْجِعْ فَأَحْسِنْ وُضُوءَكَ فَرَجَعَ ثُمَّ صَلَّى
A person came to the Messenger of Allah ﷺ. He performed ablution and left a small part equal to the space of a nail upon his foot. The Messenger of Allah ﷺ said to him : Go back and perform ablution well. Abu Dawud said: This tradition is not known through Jarir b. Hazim. It was transmitted only by Ibn Wahab. Another version adds the wording : “ Go back and perform the ablution well.” (Using translation from Abū Dāʾūd 173)
أَنَّ رَجُلًا جَاءَ إِلَى النَّبِيِّ ﷺ قَدْ تَوَضَّأَ وَتَرَكَ عَلَى قَدَمِهِ مِثْلَ مَوْضِعِ الظُّفُرِ فَقَالَ لَهُ رَسُولُ اللهِ ﷺ ارْجِعْ فَأَحْسِنْ وُضُوءَكَ
"رَأَيْتُ رجلًا توضَّأَ للِصَّلاِة فَتَركَ مَوْضِعَ ظُفُر عَلَى ظَهْر قَدَمِهِ فَأَبْصَرَهُ النَّبِىُّ ﷺ فَقَالَ: ارجعْ فَأَحْسِنْ وَضُوءَكَ، فَرَجعَ فَتوَضَّأَ ثُمَّ صَلَّى".