Tosefta על ויקרא 11:35

[With respect to] terumah oil, they may not use it to anoint their impure hands. [If] it fell on top of meat, they may rub it in, even with their impure hands. Terumah oil may not be used to seal an oven or a two-pot stove (Lev. 11:35), and they may not apply it to a shoe or a sandal. He may not smear it on his foot when his foot is [already] inside a shoe, nor may he smear it on his foot when it is [already] inside a sandal, but he may smear it on his foot and then place [his foot inside] a shoe, [or] smear it on his foot and then pace [his foot inside] a sandal. A Kohen may anoint himself with terumah oil and roll around on top of a new [leather] mat, and he need not be concerned.