Rasulullah berwudhu sekali sekali
Imam Ahmad : 15845قَالَ حَدَّثَنَا مُوسَى بْنُ دَاوُدَ حَدَّثَنَا ابْنُ لَهِيعَةَ عَنْ حَبَّانَ بْنِ وَاسِعٍ عَنْ أَبِيهِ عَنْ عَبْدِ اللَّهِ بْنِ زَيْدِ بْنِ عَاصِمٍ قَالَ رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ تَوَضَّأَ يَوْمًا فَمَسَحَ رَأْسَهُ بِمَاءٍ غَيْرِ فَضْلِ يَدَيْهِ
(Ahmad bin Hanbal may Allah be pleased with him) said: Narrated to us [Moses bin Daud] Narrated to us [Ibn Lahi'ah] from [Habban bin Wasi'] from [his father] from [Abdullah bin Yazid bin 'Ashim] said: I saw The Messenger of Allah peace and blessings be upon him performing ablution one day, he wiped his head with water that was not left over from his two hands.
Hadith Corroboration :
Imam Ahmad : 144, 146, 550, 831, 966, 1296, 1968, 2291, 2913, 15106, 15845, 15869, 17381, 25782, 25786
Imam Bukhari : 137, 153
Imam Abu Dawud : 102, 104, 106, 109, 110, 111, 113, 118, 119, 120
Imam Tirmidzi : 32, 40
Imam Nasa'i : 79, 100, 101
Imam Ibnu Majah : 397, 399, 405, 406, 429, 430, 431, 437, 438, 439
Imam Darimi : 693, 705