1. Question: Why does the Shaagos Aryeh hold that saying Shema in the morning and night are two separate mitzvos but honoring your father and mother is one mitzvah but two parts to it?
A. The Maharatz Chiyos (Sanhedrin 56b) proves that honoring your parents is one mitzvah with two parts because there are only Ten Commandments not 11.
B. What is “michayev,” meaning what creates the obligation of each mitzvah?
A1. By honoring one’s parents the obligation is because you are their child so the source of obligation is that you by yourself have to honor your mother and father. This is why it is one mitzvah with two parts to it. But what obligates one to say Shema is the time of day and night so it is two separate mitzvos.