Narrated `Amr bin `Amir: Anas said, "The Prophet used to perform ablution for every prayer." I asked Anas, "What did you used to do?' Anas replied, "We used to pray with the same ablution until we break it with Hadath."
Hadith ReferenceSahih Bukhari / The Book of Wudu (Ablution) / Hadith: 214
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة