‘Abdallah b. ‘Amr b. al-‘As said that the Prophet (ﷺ) came upon Sa'd when he was performing ablution and asked, “What is the meaning of this extravagance, Sa'd?” He replied, “Is there extravagance in ablution?” He said, “Yes, even if you are beside a flowing river.’’ Ahmad and Ibn Majah transmitted it.

وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ الْعَاصِ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: مَرَّ بِسَعْدٍ وَهُوَ يَتَوَضَّأُ فَقَالَ: «مَا هَذَا السَّرَفُ يَا سَعْدُ» . قَالَ: أَفِي الْوُضُوءِ سَرَفٌ؟ قَالَ: «نَعَمْ وَإِنْ كُنْتَ عَلَى نَهْرٍ جَارٍ» . رَوَاهُ أَحْمد وَابْن مَاجَه