صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
باب قضاء الفوائت - ذكر البيان بأن على الناسي صلاته عند ذكره إياها أنه يأتي بها فقط
Chapter on Making Up Missed Prayers - Clarification that one who forgets a prayer should perform it when remembered only
1 hadith
Hadith 2647
Sayyiduna Anas (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) said: "Whoever forgets any prayer, then when he remembers it, he should perform it."