Responsa for Eruvin 123:10

ואמר רבי חייא בר אבא אמר רבי יוחנן בן נח נהרג על פחות משוה פרוטה ולא ניתן להשבון

and 'imperfect' a rental that was less than a Perutah, the objection would arise: Is there any authority who upholds the View that [acquisition] from a heathen cannot be effected with less than a Perutah? Did not, as a matter of fact, R'Isaac son of R'Jacob B'Giyori send the following message in the name of R'Johanan, 'Be it known to you that one can lease from a heathen even with less than a perutah', and R'Hiyya B'Abba ruled in the name of R'Johanan, 'A Noahide<span class="x" onmousemove="('comment',' Lit., 'a son of Noah', sc. any heathen.');">²¹</span> would rather be killed than spend so much as a perutah<span class="x" onmousemove="('comment',' The smallest coin (v. Glos.) . Lit., 'for less than the value of a perutah.'');">²²</span>

Shut min haShamayim