(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). (ID)
Reference (ID): Sahih al-Bukhari 2936 (ID)
In-book reference (ID): Book 56, Hadith 149 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 187 (ID)