Musar for Yevamot 149:10
ואיבעית אימא נגיעה דתרומה מהכא נפקא (ויקרא יב, ד) בכל קדש לא תגע אזהרה לאוכל או אינו אלא לנוגע
— R. Zera replied: In respect of touch;<span class="x" onmousemove="('comment',' Before sunset on the day of purification no terumah may come in contact with the unclean vessel; and the same restriction applies to the tebul yom (v. Glos.). This could not have been deduced from Lev. XXII, 7 which does not speak of touch or contact but of eating. ');"><sup>23</sup></span> as it was taught: And it shall be unclean<span class="x" onmousemove="('comment',' Lev. XI, 32, even after it had been put in water. ');"><sup>24</sup></span> might have been taken to refer to all cases,<span class="x" onmousemove="('comment',' I.e., that the uncleanness remains in respect of both terumah and [second] tithe. ');"><sup>25</sup></span>