The image below  is a screen shot  displaying Reliance of the Traveller, Book O, Ch.1.2, as it appeared in my browser, which was pointed to  the search result from http://www.muhaddith.org/cgi-bin/e_optns.exe.  Muhaddith is an Islamic web site which maintains a large library consisting mostly of Arabic texts. Reliance of the traveller is one of the few English translations  available there.  Maktabh.org has a Scribid version of Reliance that will be easier to search and read than the text version which serves as my source.

   This section of the code lists several homicidal offenses for which there is no indemnity. The fourth item in the enumerated list informs us that there is no retaliation against a Muslim who kills his child or grandchild.