The Meaning of His Saying: "It is That" in the Hadith of Rabi'ah

Question:
O Shaykh, in the hadith of (may Allah be pleased with him), as long as his saying is "it is that," and the demonstrative pronoun refers to what does not return, is this in the style of rhetoric?

Answer:
Yes, "it is that" means the request. It is that, because the Prophet (peace and blessings be upon him) said Is there any other request besides this one? So Rabi'ah said, "It is that," meaning the request; there is nothing else. Yes.