\n So, when we look at the content of the Hadith, it must be...

\n So, when we look at the content of the Hadith, it must be related to a specific event\/situation, i.e., where idols could have been installed and\/or pictures of idols were installed on the graves of the non-believers, as per pre-Islamic idol worshipping rituals.

Why should we assume this?\u00a0 As construction of graves are allowed not only in Islamic but prior to it during the time of other holy Prophets -as , keeping dogs for security is also allowed, pictures of the natures or living beings without head are also allowed in Islam.