(99) باب هَلْ يُرْشِدُ الْمُسْلِمُ أَهْلَ الْكِتَابِ أَوْ يُعَلِّمُهُمُ الْكِتَابَ
Narrated `Abdullah bin `Abbas:
Allah's Messenger (ﷺ) wrote a letter to Caesar saying, "If you reject Islam, you will be responsible for the sins of the peasants (i.e. your people). (RU)
Reference (RU): Sahih al-Bukhari 2936 (RU)
In-book reference (RU): Book 56, Hadith 149 (RU)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 187 (RU)