Hadith 34:28
Qutaybah ibn Sa'id narrated to us, Layth ibn Sa'd narrated to us, from Yazid ibn al-Hadi, from Ibn Shihab, who said: It reached us that Khadijah bint Khuwaylid, the wife of the Prophet, may Allah bless him and grant him peace, was the first to believe in Allah and His Messenger, and she died before the prayer was made obligatory.
حدثنا قتيبة بن سعيد حدثنا ليث بن سعد عن بن الهادي عن بن شهاب قال بلغنا أن خديجة بنت خويلد زوج النبي صلى الله عليه وسلم كانت أول من آمن بالله ورسوله وماتت قبل أن تفرض الصلاة