وَعَنْ أَنَسٍ
قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَتَوَضَّأُ لِكُلِّ صَلَاةٍ وَكَانَ أَحَدُنَا يَكْفِيهِ الْوُضُوءُ مَا لَمْ يُحْدِثْ
God’s messenger used to perform ablution for every prayer, but that they made the ablution serve as long as they did nothing which broke the state of ceremonial purity.
Mishkat al-Masabih 394, Book 4, Purification, Hadith 130. 1 min read