Reference for Shabbat 205:10

רב יעקב בריה דבת יעקב אמר הא מני ר' יוסי היא דאמר לא חייבו שתי אותיות אלא משום רושם והא מדסיפא ר' יוסי היא רישא לאו ר' יוסי כולה רבי יוסי היא:

if for [human] consumption, [the standard of culpability is] the size of a dried fig; is for animal [food], a kid's mouthful; if for fuel, as much as is required for boiling a light egg; if in order to improve the soil,<span class="x" onmousemove="('comment',' To leave room for expansion for the other plants. ');">¹⁵</span> however little. Are not all in order to improve the soil?<span class="x" onmousemove="('comment',' That is their effect, whatever the intention. ');">¹⁶</span>

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