Chapter 2 mentions sixteen rituals. Can you provide the full list and explain the 'Upanayana' ceremony?

The provided text from Chapter 2 states that 'From birth to death, there are sixteen rituals for the body,' but it does not provide a list of these sixteen rituals. The only ceremony specifically named is the 'naming ceremony' (Namakaran), which is mentioned solely to introduce the story of how the author, Hemadpant, was given his name. There is no information or explanation regarding the 'Upanayana' ceremony or any of the other fifteen rituals. The chapter uses the concept of the naming ceremony as a literary device to transition into a sub-story about the author.