What is the authenticity of the hadith: "Ask Allah for Firdaws, for it is the navel of Paradise, and the people of Firdaws will hear the creaking of the Throne"? And what is the meaning of the "creaking of the Throne"? And what is Firdaws, and what distinguishes it from Paradise?

When asked about the Hadith (definition): "Ask Allah for Al-Firdaws, for it is the navel of Paradise, and the people of Al-Firdaws hear the creaking of the Throne," the answer was that its chain of narration is very weak due to Ja'far ibn Al-Zubair, regarding whom the imams unanimously agreed to abandon his narrations. Al-Albani also deemed it weak, as he did all Ahadith that contained the phrase "the creaking of the Throne." As for Al-Firdaws, despite the weakness of the first Hadith, it is mentioned in a Hadith in Bukhari: "When you ask Allah, ask Him for Al-Firdaws, for it is the middle of Paradise and the highest part of Paradise, and above it is the Throne of the Most Merciful, and from it spring forth the rivers of Paradise." Al-Firdaws may refer to all of Paradise or to its best and highest part. In the Arabic language, Al-Firdaws means a garden. Its description as being the middle and highest part of Paradise means that it is its elevated plateau, with the other gardens around it and below it, and it is the highest of them, with nothing above it except the Throne of the Most Merciful, and from it spring forth the rivers of Paradise.