The Meaning of the Hadith: “May Allah curse the thief who steals an egg”

Question:
Is the egg referred to here the common egg?

Answer:
The scholars said: Its meaning is that he steals a trivial thing, which leads him to a great thing. He steals a rope and his hand is cut off, and he steals an egg and his hand is cut off. That is, he becomes bold in taking a small thing, then he becomes accustomed to it until he becomes bold in taking a great thing for which his hand is cut off.
Some of them said: The intended meaning is the egg that is used, namely the helmet used in jihad that is placed on the head, and the rope is the ropes of ships. However, the more correct view is the opposite of that. The more correct view is that the intended meaning is that he is lenient, stealing an egg and a small amount, and then this habit leads him to fall into the great [sin]. We ask Allah for safety.
Q: Is the egg the nisab (minimum threshold for zakah)?
The Shaykh: Yes, the helmet is large and expensive, but the intended meaning, according to the correct view, is the general type of the common egg, and the common rope; because this leads him to the great [sin]. That is, he is lenient until he falls into what causes his hand to be cut off. We ask Allah for safety.