This is an English translation of Mukhtasar Sarim al-Maslul Ala' Shatim ar-Rasul by Muhammad al-Ba'ali al-Hanbali which is a summarisation of Shaykh al-Islam Ibn Taymiyyah's orginal work wherein he discusses the ruling of one who insults the Prophet (ﷺ).
This book is divided into four issues: The First Issue: that the one who insults him (the prophet) whether Muslim or disbeliever is to be killed. The Second Issue: That they are to be killed even if they pay a protective tax in a Muslim State. The Third Issue: Concerning the Islamic ruling if they repent. The Fourth Issue: Clarification of what constitutes insulting.