Detailed Instructions: In this task, you are given a sentence in Persian, and your task is to translate it into English.
Q: بر اساس یک رسم نانوشته، هر ابزار، وسیله و یا حتی خوردنی که برای بار اول وارد ایران شود ممنوع است.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
According to non-written law , whatever product, including food, that comes to Iran from abroad for the first time is banned...