Bulugh al-Maram, Book 1, Hadith 80 (In-Book)

Al-Bukhari’s version adds: “Then perform ablution for every prayer”.

وَلِلْبُخَارِيِّ: { ثُمَّ تَوَضَّئِي لِكُلِّ صَلَاةٍ } (86)‏.‏ ‏2 ‏- (1/332/فتح )‏.‏

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also referenced under: Book 1, Hadith 74 (English)