Rashi on Leviticus 27:20/רש"י על ויקרא כ״ז:כ׳

1ואם לא יגאל את השדה AND IF HE WILL NOT REDEEM THE FIELD— “he” means, the man who dedicated it,

2ואם מכר OR IF HE HATH SOLD — “he”: the treasurer of the Temple property has sold (Arakhin 25b),

3את השדה לאיש אחר לא יגאל עוד THE FIELD TO ANOTHER MAN, IT SHALL NOT BE REDEEMED ANY MORE so as to return into the possession of him who dedicated it.