Zayd ibn Aslam said, "My father sent me to Ibn 'Umar and I saw him write, 'In the Name of Allah, the All-Merciful, Most Merciful. Following on from that'"  

عَنْ زَيْدِ بْنِ أَسْلَمَ قَالَ أَرْسَلَنِي أَبِي إِلَى ابْنِ عُمَرَ فَرَأَيْتُهُ يَكْتُبُ بِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ أَمَّا بَعْدُ  

Hisham ibn 'Urwa said, "I saw some of the letters of the Prophet, may Allah bless him and grant him peace. After the introduction he said, 'Following on from that'"  

عَنْ هِشَامِ بْنِ عُرْوَةَ قَالَ رَأَيْتُ رَسَائِلَ مِنْ رَسَائِلِ النَّبِيِّ ﷺ كُلَّمَا انْقَضَتْ قِصَّةٌ قَالَ أَمَّا بَعْدُ