Anas said, "The Prophet ﷺ used to perform ablution for every prayer." I asked Anas, "What did you used to do?' Anas replied, "We used to pray with the same ablution until we break it with Hadath."  

كَانَ النَّبِيُّ ﷺ يَتَوَضَّأُ عِنْدَ كُلِّ صَلاَةٍ قُلْتُ كَيْفَ كُنْتُمْ تَصْنَعُونَ قَالَ يُجْزِئُ أَحَدَنَا الْوُضُوءُ مَا لَمْ يُحْدِثْ  

"The Prophet would perform Wudu for every Salat." I said, "So what about you, what would you do?" He said I wouId pray all of the prayers with one Wudu, as long as we had not committed Hadath (anything that invalidates Wudu)."  

سَمِعْتُ أَنَسَ بْنَ مَالِكٍ يَقُولُ كَانَ النَّبِيُّ ﷺ يَتَوَضَّأُ عِنْدَ كُلِّ صَلاَةٍ قُلْتُ فَأَنْتُمْ مَا كُنْتُمْ تَصْنَعُونَ قَالَ كُنَّا نُصَلِّي الصَّلَوَاتِ كُلَّهَا بِوُضُوءٍ وَاحِدٍ مَا لَمْ نُحْدِثْ  

[Machine] The Messenger of Allah ﷺ used to perform ablution before every prayer. I asked, "And how did you all used to do?" He said, "We would pray all the prayers with one ablution."  

كَانَ رَسُولُ اللهِ ﷺ يَتَوَضَّأُ عِنْدَ كُلِّ صَلَاةٍ قُلْتُ فَأَنْتُمْ كَيْفَ كنتم تَصْنَعُونَ؟ قَالَ كُنَّا نُصَلِّي الصَّلَوَاتِ بِوُضُوءٍ وَاحِدٍ