אמר רבא א"ר יוחנן ואמרי לה אמר רב חסדא אמר ר' יוחנן ספק חי ספק מת אין מתרפאין מהן ודאי מת מתרפאין מהן
מת האיכא חיי שעה לחיי שעה לא חיישינן
The Gemara challenges: Even if it is certain that the patient will die if he is not treated, nevertheless, there is value in temporal life, i.e., it is preferable for the Jew to live as long as his ailment permits rather than risking a premature death at the hands of a gentile physician. The Gemara explains: We are not concerned with the value of temporal life when there is a possibility of permanent recovery, and therefore it is preferable to receive medical attention from a gentile despite the risk involved.
ומנא תימרא דלחיי שעה לא חיישינן דכתיב (מלכים ב ז, ד) אם אמרנו נבוא העיר והרעב בעיר ומתנו שם והאיכא חיי שעה אלא לאו לחיי שעה לא חיישינן
The Gemara asks: And from where do you say that we are not concerned with the value of temporal life? As it is written with regard to the discussion held by four lepers left outside a besieged city: “If we say: We will enter into the city, then the famine is in the city, and we shall die there; and if we sit still here, we also die. Now therefore come, and let us fall unto the host of the Arameans; if they save us alive, we shall live; and if they kill us, we shall but die” (II Kings 7:4). The starving lepers decided to risk premature death rather than waiting to die of starvation. The Gemara asks rhetorically: But isn’t there temporal life to be lost, in which case it would be preferable for the lepers to remain in their current location? Rather, is it not apparent that we are not concerned with the value of temporal life?