وَعَنِ ابْنِ عَوْنٍ، عَنْ أَنَسِ بْنِ سِيرِينَ قَالَ: كَتَبْتُ لِابْنِ عُمَرَ، فَقَالَ: اكْتُبْ بِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ، أَمَّا بَعْدُ: إِلَى فُلانٍ.
"In the Name of Allah, the All-Merciful, Most Merciful. Following on from that: To so-and-so."'"
Source: Al-Adab Al-Mufrad — repository translation · Imam Muhammad ibn Ismail al-Bukhari — authenticity/grade metadata requires independent source review · Sunnah.comAudio not available for the selected reciter.
Source: Al-Adab Al-Mufrad — repository arabic · Imam Muhammad ibn Ismail al-Bukhari · Sunnah.com