Beitzah 33A

וכן ביעתא, וכן קדרה, וכן פוריא, וכן חביתא.

And similarly, if one wishes to place eggs on the mouth of a hollow vessel or on a grill sitting above coals, he must first hold the vessel in his hands and put the eggs on it, and only afterward position them both on the coals. And similarly, with regard to a pot placed on jugs, one must hold the pot above the jugs before placing them underneath it. And similarly, in the case of a collapsible bed, whose legs and cover are separate pieces, one must first stretch the upper part, then add the legs. And similarly, in the case of jugs positioned one on top of the other, the upper one must be held in place first and then the others added below.

ואין סומכין את הקדרה בבקעת, וכן בדלת. בדלת סלקא דעתך?! אלא אימא: וכן הדלת. תנו רבנן: אין סומכין את הקדרה בבקעת, וכן הדלת, לפי שלא נתנו עצים אלא להסקה. ורבי שמעון מתיר.

§ It was taught in the Mishnah: And one may not prop a pot with a piece of wood, and similarly a door. The Talmud asks: With regard to a door, can this enter your mind? Is it possible to prop a pot by means of a door? Rather, say and correct the wording as follows: And similarly, one may not prop a door with a piece of wood. A baraita states: One may not prop a pot with a piece of wood, and similarly a door, as wood is to be used only for kindling. With regard to any use other than kindling, wood is considered muktze. And R' Shimon, who does not accept the prohibition of muktze, permits it.

ואין מנהיגין את הבהמה במקל ביום טוב, ורבי אלעזר ברבי שמעון מתיר. לימא רבי אלעזר ברבי שמעון כאבוה סבירא ליה, דלית ליה מוקצה? לא, בהא אפילו רבי שמעון מודה, משום דמחזי כמאן דאזיל לחנגא.

The baraita continues: And one may not lead an animal with a stick on a Festival, but R' Elazar, son of R' Shimon, permits it. The Talmud asks: should we say that R' Elazar, son of R' Shimon, holds in accordance with the opinion of his father, R' Shimon, who is not of the opinion that there is a prohibition of muktze, and he therefore permits one to take any stick and lead an animal with it? The Talmud rejects this: No, there is no issue of muktze here at all, for in this case even R' Shimon concedes to the first tanna that this activity is prohibited, not due to muktze but because one who does so looks like one who is going to the market [ḥinga] in the manner of a weekday. On a Festival, one must therefore lead the animal in an unusual fashion.