Sefer Chasidim Siman 742
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
ומי שיושב לפני חולה בשעה שנוטה למות ואין שם אדם אחר שידע בענין המת לעיין עליו מתי תצא נפשו ויפשוט אבריו ויעצים עיניו ויעסוק בו והגיע זמן התפלה אל יצא משם להתפלל:
Medieval Jewish mysticism, translated by Sholom Alchanan Singer. Northbrook, Ill. Whitehall Co., 1971
One who is sitting beside a sick person at the time that he is about to pass away and there is no other person who is knowledgable in how to take care of a dead person (e.g. defining the time when his soul comes out, how to straighten his limbs, close his eyes, etc.) - he himself should do it. And when the time of prayer arrives - he shouldn't leave that place in order to pray.