Mark 10:3 What did Moses command you?
What to you did he command, Moses?
Interesting and Hidden Aspects:
Here, Jesus answers a question with a question, as he often does. Here the question is about divorce, specificaly about divorce law. Since the question is about law, Jesus goes to Moses, the original law-bringer.
What -- -- The word translated as "what" means primarily "anything" or "anyone," but Jesus often uses it to start a question so it means "who", "what", or even "why".
did -- This helping verb make the upcoming verb the past, but in Greek the tense is one about something happening at a specific point in time, past, present, or future. Since Moses was in the past, the past works best in English.
Moses -- "Moses" is from the Greek spelling of the Hebrew name.
command -- "Command" is from a Greek verb that primarily means to give verbal commands or orders. Of course, famously, the ten commandments of Moses were written. They are often described in the form of "what has been written," which gets translated as "scripture."
you? -- The Greek pronoun "you" here is plural and in the form of an indirect object, "to you", "for you", etc.
Τί ( irreg sg neut nom ) "What" is tis which can mean "someone", "any one", "everyone", "they [indefinite]", "many a one", "whoever", "anyone", "anything", "some sort", "some sort of", "each", "any", "the individual", "such," and so on. In a question, it can mean "who", "why," or "what."
Μωυσῆς; (Hebrew Name) "Moses" is Moyses, which means "Moses".
Possible Symbolic Meaning:
Note that Christ describes the commandments as Moses's laws. Jesus refers to the commandments as specific to Moses, while "the law" come from the entire tradition of Jewish history (Mat 11:13). The law is bigger than the commandments, but the commandments are the basis of the law. Both are permanent fixture in human history (Mat 5:18).
For Jesus , this is where the discussion of the laws of the universe (the universal rule or kingdom of heaven) begins. The law started with Moses explained certain aspects of how the world works. Christ agrees with all of that explanation and only seeks to extend it and to encourage all of us to extend it.