The Prophet of Allah ﷺ said, while his funeral bier was placed before them, meaning Saad's, "The Throne of the Most Merciful shook for him."
أن نبي الله ﷺ قال- وجنازته موضوعة يعني سعدا-: اهتز لها عرش الرحمن.
Muslim narrated it in the Book of the Virtues of the Companions (2467-125), from Muhammad bin Abdullah Razi, who said, Abdul-Wahhab bin Ata Khafaf narrated to us, from Saeed, from Qatada, Anas bin Malik narrated to us, saying, then he mentioned it.There are other hadiths on this subject mentioned in the Book of Faith, in the chapter on the shaking of the Throne of the Most Merciful, so it should be consulted there.