Does the ruling of ignorance in leasing apply to selling, possessing, and inheriting?

It has been previously clarified that it is not permissible to lease a property for the lifetime of the lessee due to the uncertainty in the duration and the rent. As for the children inheriting their father's estate while he is alive, by him transferring ownership to them, this is permissible and is considered a valid gift. However, selling it to them fictitiously so that the father retains it until he dies, and then it devolves to them, this is not permissible. Its ruling is the same as that of a bequest to an heir, and there is no bequest to an heir.