Rashi on Leviticus 25:13/רש"י על ויקרא כ״ה:י״ג

1תשבו איש אל אחזתו YE SHALL RETURN EVERY MAN UNTO HIS POSSESSION — But has it not already been stated: (v. 10) “and ye shall return every man unto his possession”? But this is repeated in order to include in this law also the case of one who sold his field and his son came forward and redeemed it, — that it also is to be returned to the father in the Jubilee (Sifra, Behar, Chapter 3 6).