(526) بَابُ أَمَّا بَعْدُ
Zayd ibn Aslam said, "My father sent me to Ibn 'Umar and I sawhim write, 'In the Name of Allah, the All-Merciful, Most Merciful. Followingon from that'"
Reference: Al-Adab Al-Mufrad 1120
In-book reference: Book 45, Hadith 4
English translation: Book 45, Hadith 1120