Musnad Ahmad Hadith 13573

It is narrated from Anas (may Allah be pleased with him) that there was a man who used to write for the Prophet (ﷺ). He had also memorized Surah Al-Baqarah and Aal-e-Imran. The Prophet (ﷺ) would dictate to him "Sami'an" and he would write "Sami'an Basiran" instead. The Prophet (ﷺ) would say, "Write it like this," but he would say, "I will write as I wish." Similarly, when the Prophet (ﷺ) would dictate "Aleema," he would write "Aleema Hakeema" instead. After some time, that man became an apostate and turned Christian, and began to say, "I used to write whatever I wanted for Muhammad (ﷺ) among you all." When that man died, he was buried, but the earth threw him out. Anas (may Allah be pleased with him) says that Abu Talha (may Allah be pleased with him) told me that he went to the place where that man had died and found him lying outside.