Hadith 5808
Mishkat al-Masabih
Excellent Qualities and Description of the Prophet · His Character and Natural Disposition - Section 1
Arabic
وَعَنْ أَنَسٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا صَلَّى الْغَدَاةَ جَاءَ خَدَمُ الْمَدِينَةِ بِآنِيَتِهِمْ فِيهَا الْمَاءُ فَمَا يَأْتُونَ بإناءٍ إِلَّا غمسَ يدَه فِيهَا فرُبما جاؤوهُ بِالْغَدَاةِ الْبَارِدَةِ فَيَغْمِسُ يَدَهُ فِيهَا. رَوَاهُ مُسْلِمٌ
English translation
Anas told that when God's messenger prayed the dawn prayer the servants in Medina brought their vessels containing water and they would not bring a vessel into which he did not dip his hand. They would often bring them on a cold morning and he would dip his hand into them. Muslim transmitted it.