435. hadíth
ومن خطبة له (عليه السلام)
About the condition of the people before the proclamation of prophethood and the Prophet’s performance in spreading his message
Nahj al-Balāgha
al-Sharīf al-Raḍī
Sermons
Age of Ignorance, Muhammad''s efforts to spread God''s message
A fordítás angol nyelvű (Sayed Ali Raza), forrás: Thaqalayn.net.