The Scribes of Quraysh and the Prophet's House

Al-Baladhuri relates from Abu Bakr ibn Abd Allah ibn Abi Jahm al-Adawi that when Islam came, there were seventeen men among Quraysh who could write. He then names men and women writers from Quraysh and its allies, and those who wrote for the Prophet. ¹

Al-Baladhuri counts among those who wrote in Quraysh: Umar ibn al-Khattab (may God be pleased with him), Ali ibn Abi Talib (may God be pleased with him), Uthman ibn Affan (may God be pleased with him), Abu Ubayda ibn al-Jarrah (may God be pleased with him), Talha, Yazid ibn Abi Sufyan, Abu Hudhayfa ibn Utba (may God be pleased with him), Hatib ibn Amr, Abu Salama al-Makhzumi, Aban ibn Sa'id and his brother Khalid, Abd Allah ibn Sa'd ibn Abi Sarh, Huwaytib ibn Abd al-Uzza (may God be pleased with him), Abu Sufyan ibn Harb, Mu'awiya ibn Abi Sufyan, and Jahm ibn al-Salt. Among the allies of Quraysh was al-Ala' ibn al-Hadrami. ¹

The source says that al-Shifa bint Abd Allah al-Adawiyya was a writer in the Jahiliyya, and that Hafsa wrote, as did Umm Kulthum bint Uqba and Karima bint al-Miqdad. It says that Aisha and Umm Salama could read but did not write. ¹

Al-Baladhuri says that the first to write for the Prophet when he came to Medina was Ubayy ibn Ka'b, and when he was absent Zayd ibn Thabit wrote; the two wrote the revelation. The first from Quraysh to write for him was Abd Allah ibn Sa'd ibn Abi Sarh. ¹

The source says that Abd Allah ibn Sa'd later apostatised and returned to Mecca, that he would change what was dictated to him, and that a verse of al-An'am was revealed about the man who claimed he could bring the like of what was revealed. ¹

This report comes from a single source and needs an additional source.