Commentary for Kiddushin 47:2
ואלא בזוזי דידה ומעשר דידיה איש אמר רחמנא ולא אשה
Shall we say, [she redeems it] with her husband's money, the second tithe also being her husband's - then she merely acts as her husband's agent.<span class="x" onmousemove="('comment',' And must certainly add a fifth.');"><sup>2</sup></span> But if with her money<span class="x" onmousemove="('comment',' Money, the principal of which by the terms of the marriage settlement belonged to her, while her husband enjoyed its usufruct. This money, and all other property held by a wife on the same terms, are designated 'property of plucking' (v. Glos. s.v. mulug) .');"><sup>3</sup></span> and his tithe, the Divine Law said, [And if] a man [will redeem aught of his tithe, then he shall add there to the fifth part thereof],<span class="x" onmousemove="('comment',' Lev. XXVII, 31.');"><sup>4</sup></span>
Daf Shevui to Kiddushin
Therefore, the Talmud suggests that it must be a case where someone gives her money on condition that she use it to redeem the tithe. The rabbis hold that this money is automatically her husband’s and therefore, she is his agent and must add the fifth. R. Meir says it is not automatically her husband’s and therefore she need not add the fifth.
These opinions are opposite of those we saw above, and thus both seem to be contradictory.