By inference: If there is a wound on his foot, he may go out with one sandal. In that case, with a sandal on which of his feet does he go out? Rav Huna said: With a sandal on the foot that has a wound on it. Apparently, he holds: A sandal is made for the purpose of avoiding pain. Typically, a person wears sandals only in order to avoid the pain of walking on stones and the like. When he is seen with only one sandal, it is clear that he is oblivious to that pain and the only reason that he is wearing the sandal is due to the wound on his foot. Consequently, no one will suspect that he went out wearing two sandals and that if he is wearing one, he must be carrying the other one.

And Ḥiyya bar Rav said: He goes out with a sandal on the foot that does not have a wound on it. Apparently, he holds that the sandal is made for the purpose of providing comfort, and he wears it on his healthy foot. And it does not arouse suspicion because, with regard to that foot on which there is a wound, its wound indicates that he is unable to wear a sandal on that foot, and it is clear that he left the other sandal at home.

The Gemara comments: And Rabbi Yoḥanan also holds that the opinion of Rav Huna, which maintains that one only wears sandals to avoid pain, is correct. As Rabbi Yoḥanan said to Rav Shemen bar Abba, his attendant: Give me my sandal. He gave him the right sandal. He said to him: You have rendered this foot as one with a wound. In Rabbi Yoḥanan’s opinion, one must always put on his left shoe first. One who puts on the right shoe first is no longer permitted to put on the left shoe. By handing him his right sandal, he is forcing Rabbi Yoḥanan to go out with one sandal, leading onlookers to conclude that he has a wound on that foot. That incident corresponds to Rav Huna’s opinion that one wears the sandal on the wounded foot.

The Gemara rejects this: And perhaps, he holds in accordance with the opinion of Ḥiyya bar Rav, which maintains that one wears the sandal on the healthy foot, and he is saying as follows: By handing me my right shoe, you have rendered my left foot, on which I have no shoe, as one with a wound. No proof can be cited from that incident, as Rabbi Yoḥanan’s opinion cannot be ascertained from the exchange with his attendant.

And Rabbi Yoḥanan follows his regular line of reasoning. As Rabbi Yoḥanan said: Just as one dons phylacteries, so too, one puts on shoes. Just as phylacteries are placed on the left arm, so too, when putting on shoes one begins with the left foot.

The Gemara raises an objection to Rabbi Yoḥanan’s opinion from a baraita: When one puts on his shoes, he puts on the right shoe first and afterward puts on the left shoe.

Rav Yosef said: Now that it was taught in a baraita in this manner, and Rabbi Yoḥanan stated the halakha in that manner, one who acted this way acted properly, and one who acted that way acted properly, as each custom has a basis.

Abaye said to him: Why is the Gemara certain that Rabbi Yoḥanan disagrees with the baraita? Perhaps Rabbi Yoḥanan had not heard this baraita, and had he heard it, he would have retracted his opinion. And even if he heard it, perhaps he heard it and held that the halakha is not in accordance with that mishna. In any case, it is necessary to rule in accordance with one of the opinions.

Rav Naḥman bar Yitzḥak said: And one who fears Heaven fulfills both opinions. And who is this God-fearing person? Mar, son of Rabbana. How does he conduct himself? He puts on his right shoe and does not tie the laces. And then he puts on his left shoe and ties it, and then afterward ties the laces of his right shoe. Rav Ashi said: I saw that Rav Kahana was not particular with regard to the order in which he put on his shoes.

After citing this excerpt from Hilkhot Derekh Eretz with regard to putting on shoes, the Gemara cites the entire matter. The Sages taught: When one puts on his shoes, he puts on the right shoe first and afterward puts on the left shoe because the right always takes precedence. When he removes them, he removes the left and afterward he removes the right, so that the right shoe will remain on the foot longer.

When one washes his feet, he washes the right first and afterward he washes the left. And one who wishes to spread oil on his feet spreads oil on the right first and afterward spreads oil on the left. And one who wishes to spread oil on his entire body, spreads oil on his head first because it is the king of all his other limbs.

We learned in the mishna: And he may neither go out with phylacteries. Rav Safra said: Do not say that this halakha is only in accordance with the opinion of the one who said that Shabbat is not an appropriate time to don phylacteries, i.e., it is prohibited to don phylacteries on Shabbat, and that is the reason that one may not go out into the public domain with them. Rather, even according to the one who said that Shabbat is an appropriate time to don phylacteries, he may not go out with them due to the concern lest he come to carry them in his hand in the public domain, which is prohibited by Torah law.

And some teach the statement of Rav Safra as referring to the latter clause of the mishna: And if he went out into the public domain with phylacteries he is not liable to bring a sin-offering. Rav Safra said: Do not say that this halakha is only according to the opinion of the one who said that Shabbat is an appropriate time to don phylacteries, and therefore he does not violate a Torah prohibition by going out into the public domain with phylacteries and is not liable to bring a sin-offering. Rather, even according to the opinion of one who said that Shabbat is not an appropriate time to don phylacteries, he is not liable to bring a sin-offering. What is the reason that he is exempt? Donning phylacteries is performed in the manner of wearing a garment or an ornament. Although one may not use phylacteries on Shabbat, there is no Torah prohibition against moving them.

We learned in the mishna: Nor with an amulet when it is not from an expert. Rav Pappa said: Do not say that the meaning of the mishna is that one may only go out with an amulet if the person who wrote it is an expert and the amulet has proven effective. Rather, if the person who wrote it is an expert, even though the amulet has not proven effective, he may go out with it.

The Gemara comments: The language of the mishna is also precise, as it teaches: Nor with an amulet when it is not from an expert, and it does not teach: When the amulet is not effective. Apparently, it is sufficient if the writer of the amulet is an expert, even if the effectiveness of the amulet has not been proven. The Gemara comments: Indeed, learn from it.

The Sages taught in the Tosefta: What is an effective amulet? It is any amulet that healed one person once, and healed him again, and healed him a third time. That is the criterion for an effective amulet, and it applies to both a written amulet and an amulet of herbal roots; both if it has proven effective in healing a sick person who is dangerously ill, and if it has proven effective in healing a sick person who is not dangerously ill. It is permitted to go out with these types of amulets on Shabbat.

And an amulet was not only permitted in a case where one has already fallen due to epilepsy and wears the amulet in order to prevent an additional fall. Rather, even if one has never fallen, and he wears the amulet so that he will not contract the illness and fall, he is permitted to go out with it on Shabbat is permitted.

And he may tie and untie it even in the public domain, as long as he does not tie it