Retains

If a man sells a house in a walled city, he retains his right of redemption until a full year after its sale; during that year it may be redeemed.

…he retains the right of redemption after he has sold himself. One of his brothers may redeem him:

Then the LORD said to Satan, “Have you considered My servant Job? For there is no one on earth like him, a man who is blameless and upright, who fears God and shuns evil. He still retains his integrity, even though you incited Me against him to ruin him without cause.”