A more thorough explanation:

Said is an adjective used to refer back to a thing that was previously mentioned or identified. It is commonly used in legal documents to avoid repetition and confusion. It can also mean aforesaid or above-mentioned.

• "The said driver drove said automobile in a negligent manner."
• "The contract was signed by the said parties on the said date."

In the first example, "said" is used to refer back to the driver and the automobile that were previously mentioned. In the second example, "said" is used to refer back to the parties and the date that were previously identified.

By using "said," the writer can avoid repeating the same words and make the document clearer and more concise.