Hadith 17:549
Mu'awiyah ibn Hisham narrated to us, he said: Sufyan narrated to us, from Zayd ibn Aslam, he said: My father sent me to Ibn Umar, and I saw him writing: "In the name of Allah, the Most Gracious, the Most Merciful. As to what follows..."
حدثنا معاوية بن هشام قال حدثنا سفيان عن زيد بن أسلم قال أرسلني أبي إلى بن عمر فرأيته يكتب بسم الله الرحمن الرحيم أما بعد