It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with him), he says: Fifty prayers were made obligatory upon your Prophet, then he asked his Lord, so He reduced them to five.
Hadith Referenceالفتح الربانی / كتاب الصلاة / 1003
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«صحيح لغيره۔ أخرجه ابن ماجه: 1400، وأخرج نحوه ابوداود: 247 ، (انظر مسند أحمد ترقيم الرسالة: 2891 ترقیم بيت الأفكار الدولية: 2891»