If a doubt of impurity arises concerning a jar of Terumah, R. Eliezer [T2 or T5] says: if it had been hitherto deposited in an exposed place, he must now place it in a hidden place; and if it had formerly been uncovered, it must now be covered. But R. Joshua [T2] maintains that if it had been in a hidden place, he must now deposit it in an exposed place; and if it had formerly been covered up, he must now uncover it. R. Gamaliel [T1, T2 or T6] says: let him not do anything new to it.
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