The Messenger of Allah ﷺ said: "When you perform Wudu', do so properly, and wash in between the fingers (Al-Asabi')."[2] [1] Al-Asabi' is plural meaning fingers as well as toes, and the author mentioned only one narration on the topic whereas some of them clarify "of the hands and feet." So he mentioned the general wording amids chapters how to wash the feet. [2] Part of this narration preceded under No. 87.  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا تَوَضَّأْتَ فَأَسْبِغِ الْوُضُوءَ وَخَلِّلْ بَيْنَ الأَصَابِعِ  

[Machine] The translation of the given Arabic sentence into English is: "The Prophet ﷺ said, 'When you perform ablution, then perfect your ablution and go between your fingers.'"  

عَنِ النَّبِيِّ ﷺ قَالَ «إِذَا تَوَضَّأْتَ فَأَسْبِغْ وُضُوءَكَ وَخَلِّلْ بَيْنَ أَصَابِعِكَ»  

[Machine] He came to the Prophet ﷺ and mentioned something, so the Prophet ﷺ said, "Perform Wudu' thoroughly and separate your fingers."  

أَنَّهُ أَتَى النَّبِيَّ ﷺ فَذَكَرَ شَيْئًا فَقَالَ النَّبِيُّ ﷺ «أَسْبِغِ الْوُضُوءَ وَخَلِّلِ الْأَصَابِعَ»  

The Messenger of Allah ﷺ said: "When you perform Wudu', do so properly, and wash in between the fingers (Al-Asabi')."[2] [1] Al-Asabi' is plural meaning fingers as well as toes, and the author mentioned only one narration on the topic whereas some of them clarify "of the hands and feet." So he mentioned the general wording amids chapters how to wash the feet. [2] Part of this narration preceded under No. 87. (Using translation from Nasāʾī 114)  

قَالَ رَسُولُ اللهِ ﷺ «إِذَا تَوَضَّأْتَ فَأَسْبَغِ الْوُضُوءَ وَخَلِّلْ بَيْنَ الْأَصَابِعِ»  

From his father who said: "I said. 'O Messenger of Allah! Inform me about Wudu.' So he said: "Perform Wudu well, and go between the fingers, and perform Istinshaq extensively except when fasting." (Using translation from Tirmidhī 788)   

" أسْبِغْ الوضوءَ، وخلِّلْ بين الأصابعِ، وبالغْ في الاستنشاق إلا أن تكون صائمًا".