Anas said that God’s messenger used to perform ablution for every prayer, but that they made the ablution serve as long as they did nothing which broke the state of ceremonial purity. Darimi transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الطهارة / 425
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «صحيح، رواه الدارمي (1/ 183 ح 726) [والبخاري: 214]»