The distance from each earth to the next is a journey of five hundred years

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both); he said that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, between each of the earths and the next earth there is a distance of five hundred years. The uppermost of them rests on the back of a fish whose two ends meet in the sky, the fish rests on the back of a rock, and the rock is in the hand of an angel. The second earth is the prison of the wind. When Allah Almighty intended to destroy the people of Ad, He commanded the keeper (angel) of the wind to send upon them a wind that would destroy Ad. He (the angel) said: 'O my Lord! Shall I release upon them wind the size of a bull's nostril?' Allah, the Compeller, the Mighty and Majestic, said to him: 'Then it would overturn the earth and everything on it. Rather, release upon them wind the size of the hole of a ring.' This is the wind about which Allah Almighty said in His Mighty Book: 'It left nothing it came upon but that it made it like decayed bones.' [Surah al-Dhariyat: 42] The third earth contains the stones of Hell, and the fourth earth contains the sulphur of Hell." The Companions (may Allah be pleased with them) said: O Messenger of Allah! Is there sulphur in Hell too? He (peace and blessings be upon him) said: "Yes, by the One in whose Hand is my soul! Indeed, in it there are valleys of sulphur such that if even firm mountains were cast into them, they would melt. The fifth earth contains the snakes of Hell; their mouths are as wide as valleys, and they will bite the disbeliever such that no flesh will remain on his bones. The sixth earth contains the scorpions of Hell; the smallest scorpion among them is the size of saddled mules, and it will sting the disbeliever such that its pain will make him forget the heat of Hell. The seventh earth is Saqar, and in it Iblis is bound in chains of iron, one hand in front of him and one hand tied behind him. Then, when Allah intends to release him upon whomever He wills of His servants, He releases him."
Abu al-Samh is alone in narrating this hadith from Isa bin Hilal, and I have previously mentioned his reliability ('adalah) with the explicit statement of Imam Yahya bin Ma'in (may Allah have mercy on him). This hadith is sahih (authentic), but the two Shaykhs did not record it.

It is narrated from Sayyidah Aishah (may Allah be pleased with her); she said: "When this verse of Surah al-Muzzammil was revealed: 'And leave Me with the deniers, the people of ease and luxury, and give them respite for a little while. Indeed, with Us are heavy shackles and a blazing Fire.' [Surah al-Muzzammil: 11-12], only a short time later the Battle of Badr took place."
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him); he said that the Messenger of Allah (peace and blessings be upon him) said: "On that Day Hell will be brought, and it will have seventy thousand reins, and with each rein there will be seventy thousand angels pulling it."
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.