Can you provide me with a sample of a Sharia-compliant will that a Muslim can write before his death?

There is no specific formula for a will (wasiyyah); rather, it can be expressed in a manner that conveys the intended meaning. For example, the testator may say: "So-and-so owes me such-and-such an amount of money," or "I have bequeathed to so-and-so such-and-such an amount of money."