And he vowed to her, “I will give you whatever you ask me for, up to one half [the wealth] of my kingdom.”
[Herod was so pleased with her performance that] he promised, with an oath, to give her whatever she asked for [i.e., with limitations. See Mark 6:23].
and said to Him, “I will give you all these things if you fall to the ground and worship me.”
So, she went out and said to her mother, “What shall I ask for?” And her mother said, “[Ask for] the head of John the Immerser.”