Furwah bin Nawfal narrates from his father that the Prophet Muhammad (peace be upon him) asked: "Are you interested in our stepdaughter Zainab? Take care of her." The narrator states: Then he came to the Prophet Muhammad (peace be upon him). The Prophet (peace be upon him) asked him, and he replied, "I have left her with her mother." The Prophet (peace be upon him) asked, "Then why have you come?" He said, "I have come so that you may teach me something which I can recite at night." The Prophet (peace be upon him) said: "Recite Surah Al-Kafirun and after reciting it, go to sleep. This Surah is a declaration of freedom from shirk (polytheism)."
Hadith Referenceصحیح ابن حبان / كتاب الزينة والتطييب / 5546
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح لغيره دون ما تقدم الإشارة إليه برقم (5501). تنبيه!! رقم (5501) = (5526) من «طبعة المؤسسة». - مدخل بيانات الشاملة -.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح