Related for Eruvin 74:20
ולמאי דסליק אדעתין מעיקרא דבעינן ראשית ששיריה ניכרין מאי קאמרי ליה
And if you prefer I might reply<span class="x" onmousemove="('comment',' In explanation of the difficulty, if R. Simeon upholds bererah why does he forbid the procedure permitted by R. Meir in the case of the wine');"><sup>62</sup></span> in accordance with the reason elsewhere indicated:<span class="x" onmousemove="('comment',' Lit., 'as he taught the reason'.');"><sup>63</sup></span> They said to R'Meir, 'Do you not agree that the skin<span class="x" onmousemove="('comment',' In which the wine is contained.');"><sup>64</sup></span> might burst<span class="x" onmousemove="('comment',' Before the priestly or levitical dues have been taken from it.');"><sup>65</sup></span>
Tosefta Demai
[If] an am ha'aretz who said to a chaver, "Buy me a bunch of vegetables," [or] "[Buy me] a loaf of bread," Rabbi Yosei says, there is no need [for the chaver] to tithe [what he purchased for the am ha'aretz, see Dem. 6:12]. Rabbi Yehudah says, he needs to tithe. Rabbi Shimon ben Gamaliel says, if he exchanges the money (i.e., he uses his own money rather than the am ha'aretz's money to purchase the vegetables or the bread, see Minchat Yitzchak here), he needs to tithe.
Ask RabbiBookmarkShareCopy