Sayyiduna Anas bin Malik (may Allah be pleased with him) narrated that the Noble Prophet (peace and blessings be upon him) said: If anyone forgets to perform a prayer, he should offer it whenever he remembers it. There is no expiation for it except to perform that missed prayer. And (Allah the Exalted has said): Establish prayer for My remembrance.
Hadith Referenceاللؤلؤ والمرجان / كتاب المساجد ومواضع الصلاة / 397
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 9 كتاب مواقيت الصلاة: 37 باب من نسى صلاة فليصل إذا ذكرها ولا يعيد إلا تلك الصلاة»