One of the wives of the Prophet (peace and blessings be upon him) (the narrator Nafi' says: I think she was Sayyidah Hafsah (may Allah be pleased with her)) was asked about the recitation of the Prophet (peace and blessings be upon him). She said: "You are not able to do it." It was said to her: "Just tell us about it." The narrator says: So she recited; she recited slowly and deliberately. The narrator says: Then Ibn Abi Mulaykah demonstrated that recitation for us: he recited "Al-hamdu lillahi Rabbil-'alamin", then paused; recited "Ar-Rahmanir-Rahim", then paused; then recited "Maliki yawmid-din".
Ahmad recorded it, and its narrators are the narrators of the "Sahih".
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2628