And he vowed to her, “I will give you whatever you ask me for, up to one half [the wealth] of my kingdom.”
and said to Him, “I will give you all these things if you fall to the ground and worship me.”
[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].
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.”