Surah 20. Ta-Ha, Ayah 18

 Moses could have just said, “A staff.” But he volunteered to talk about the uses of the staff, adding that there are many other uses he has not mentioned, with the hope that Allah would ask him about it more. The reason is that Moses wanted to prolong the conversation with Allah as much as he could.

Now comes the miracle of the rod. First of all, the attention of Moses himself is drawn to it, and he thinks of the ordinary uses to which he puts it in his daily life.