Bava Metzia 81A

הא ״גמרתיו״⁠ – שומר שכר. לא, הא ״הבא מעות וטול את שלך״⁠ – שומר שכר.

This indicates that if the skilled laborer said only: I completed the work with it, he is considered a paid bailee, i.e., even after he completes the work the item remains within his responsibility. The Talmud rejects this line of reasoning: No, this is not what should be deduced from the Mishnah. Rather, the correct deduction is that one who says: Give money first and then take what is yours, is a paid bailee.

אבל ״גמרתיו״ מאי שומר חנם? אי הכי, אדתני ״וכולן שאמרו טול את שלך והבא מעות ⁠– שומר חנם״, נשמעינן ״גמרתיו״, וכל שכן ״טול את שלך״!

The Talmud asks: But if that is the case, when one says only: I completed the work with it, what is the halakha? Is he considered an unpaid bailee? If so, rather than teaching a new halakha in the Mishnah: And all those who say: Take what is yours and bring money, each of them is considered an unpaid bailee, let it teach us instead the halakha of one who says: I completed the work with it, and it can be deduced that all the more so is this the halakha if he says to him: Take what is yours.

״טול את שלך״ אצטריכא ליה. סלקא דעתך אמינא: שומר חנם נמי לא הוי, קא משמע לן.

The Talmud rejects this line of reasoning: The case of take what is yours must be taught explicitly. Otherwise, it might enter your mind to say that once he issues this statement, he is not considered even an unpaid bailee and retains no responsibility whatsoever for the item. Therefore, the Mishnah teaches us that even in this case he is still considered an unpaid bailee and continues to bear certain responsibilities.

איכא דאמרי, אמר רב נחמן בר פפא: אף אנן נמי תנינא, וכולן שאמרו ״טול את שלך והבא מעות״⁠ – שומר חנם, מאי לאו הוא הדין ״גמרתיו״. לא, ״טול את שלך״ שאני.

There are those who say that there is a different version of this discussion. Rather than challenging that Rav Ḥisda’s opinion is opposed by the ruling of the Mishnah, Rav Naḥman bar Pappa said: We, too, learn a proof for Rav Ḥisda’s statement from the Mishnah: And all those who say: Take what is yours and bring money, each of them is considered an unpaid bailee. What, is it not correct to say that the same is true when he says: I have completed the work with it? The Talmud rejects this claim. No, the case of one who says take what is yours is different, as stated above, as one might think that this statement frees the laborer of all responsibility.