Bava Batra 72B

ואלא קשיא ״הואיל ויונקין משדה הקדש״!

The Talmud concludes stating the difficulty: But this is difficult, as R' Shimon himself said that the grafted carob tree and the sycamore trunk are consecrated along with the field since they draw their nutrients from a consecrated field, indicating that one who consecrates acts generously and does not retain the land around the trees for himself.

אלא רבי שמעון ⁠– לדבריהם דרבנן קאמר להו: לדידי, כי היכי דמוכר בעין רעה מוכר, מקדיש נמי בעין רעה מקדיש ⁠– ושיורי משייר; לדידכו, אודו לי מיהא דלא הקדיש אלא חרוב המורכב וסדן השקמה! ואמרי ליה רבנן: לא שנא.

The Talmud explains: Rather, it must be understood that when R' Shimon stated his ruling in the Mishnah, he was not expressing his own opinion. Rather, he was speaking to the Rabbis in accordance with their statement, and he meant to say: According to my opinion, just as one who sells, sells sparingly, so too, one who consecrates, consecrates sparingly and retains for himself land to nurture the trees. Therefore, when one consecrates a field, even the sycamore and carob tree are not consecrated along with it. But according to your opinion, that one who consecrates does so generously, agree with me at least that one who consecrates a field has consecrated only the grafted carob and the sycamore trunk, because they draw nutrients from consecrated ground, but he has not consecrated the other items that are not integral parts of the field. And the Rabbis said to him: There is no difference between the two in this regard. Since one who consecrates an item does so generously, everything found in the field is consecrated.

במאי אוקימתא לה ⁠– כרבי שמעון? אימא סיפא: ולא עוד, אלא אפילו הקדיש את האילנות וחזר והקדיש את הקרקע, כשהוא פודה ⁠– פודה את האילנות בשוייהן, וחוזר ופודה בית זרע חומר שעורים בחמשים שקל כסף.

The Talmud returns to the baraita that it had concluded was taught according to the opinion of R' Shimon, and asks: In accordance with which opinion did you interpret the baraita discussing consecrated property? It was interpreted in accordance with the opinion of R' Shimon. But say the last clause: And moreover, even if one consecrates the trees and then afterward he consecrates the land, when he redeems them, he redeems the trees separately in accordance with their worth, and then he redeems the land according to the standard rate, where an area fit for the sowing of a ḥomer of barley seed is redeemed for 50 silver shekels.