Hadith 402
وَعَن سعيد بْنِ زَيْدٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا وُضُوءَ لِمَنْ لَمْ يَذْكُرِ اسْمَ الله عَلَيْهِ» . رَوَاهُ التِّرْمِذِيّ وَابْن مَاجَه
Sa'id b. Zaid reported God’s messenger as saying, "He who does not mention God’s name while performing ablution is not credited with having performed it.” Tirmidhi and Ibn Majah transmitted it.