Reference for Pesachim 187:9
ת"ש מצרים הי' ארבע מאות פרסה על ארבע מאות פרסה ומצרים אחד מששים בכוש וכוש אחד מששים בעולם ועולם אחד מששים בגן וגן אחד מששים בעדן ועדן אחד מששים בגיהנם נמצא כל העולם כולו ככיסוי קדירה לגיהנם תיובתא
who erred by calculating [the distance for] pre-dawn and after nightfall.<span class="x" onmousemove="('comment',' He had merely stated that an average man can walk ten parasangs in a day, but Raba and 'Ulla had erred by adding that one travels five mils in the period stated; though most people do indeed walk five mils by the time the sun is in the heavens, that is because they generally start a little before dawn; similarly in the evening they continue their journey a little after nightfall.');"><sup>11</sup></span> Shall we say that this is a refutation of R'Hanina?<span class="x" onmousemove="('comment',' Supra 93b.');"><sup>12</sup></span>