Reference for Pesachim 64:3

ואימא הכי נמי אם כן נהדר ליה רבי יוחנן בן נורי לר' עקיבא כי היכי דמהדר ליה רבי אלעזר חסמא לר' אליעזר בן יעקב:

Our Rabbis taught: He who eats as much as an olive of terumah<span class="x" onmousemove="('comment',' This refers to the rest of the year.');">⁴</span> must pay the principal plus a fifth. Abba Saul said: [He is not liable] unless it has the worth of a perutah.<span class="x" onmousemove="('comment',' The smallest coin.');">⁵</span>

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