‘A'isha told of God’s messenger passing water and ‘Umar standing behind him with a jug of water. He said, “What is this, ‘Umar?” He replied, “Water for you to perform ablution with.” He said, “I have not been commanded to perform ablution every time I pass water. If I were to do so it would become a sunna” Abu Dawud and Ibn Majah transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الطهارة / 368
Hadith Gradingالألبانی:ضَعِيفٌ | زبیر علی زئی:إسناده ضعيف
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده ضعيف، رواه أبو داود (42) و ابن ماجه (327) ٭ عبد الله بن يحيي التوأم: ضعيف .»