3,007. Consecrating a Field You're Going to Sell
Hilchos Arachin Vacharamin 6:29
If person A tells person B, “When I buy back the field that I will sell you, it’s consecrated,” and he then buys it back, the field is consecrated. This is because it was in his possession and he had the ability to consecrate it. If person A tells person B, “When I redeem the field that I gave you as collateral, it will be consecrated,” and he redeems it, the field is consecrated; this is because he had the ability to redeem it. It would even be consecrated if he gave it as collateral for a designated period of time because he has the ability to redeem it after that time.
Hilchos Arachin Vacharamin 6:30
If person A rents out a house to person B, then he changes his mind and consecrates the house, the consecration takes effect and the rental is canceled. If the tenant lives in the house after its consecration, he violates the prohibition against making personal use of sanctified property.