Sunan Ibn Majah, Hadith 511 ⓘ
Fadl bin Mubashshir said: "I saw Jabir bin 'Abdullah performing every prayer with one ablution, and I said: 'What is this?' He said: 'I saw the Messenger of Allah doing this, and I am doing as the Messenger of Allah did.'"
حَدَّثَنَا إِسْمَاعِيلُ بْنُ تَوْبَةَ، حَدَّثَنَا زِيَادُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا الْفَضْلُ بْنُ مُبَشِّرٍ، قَالَ رَأَيْتُ جَابِرَ بْنَ عَبْدِ اللَّهِ يُصَلِّي الصَّلَوَاتِ بِوُضُوءٍ وَاحِدٍ . فَقُلْتُ مَا هَذَا فَقَالَ رَأَيْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يَصْنَعُ هَذَا فَأَنَا أَصْنَعُ كَمَا صَنَعَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ .
also referenced under: Book 1, Hadith 551 (In-Book) & Volume 1, Book 1, Hadith 511 (DarusSalam)