The Messenger of Allah ﷺ said, "This fire of yours is one part out of a hundred parts of the fire of Hell."
حدثنا قتيبة حدثنا عبد العزيز عن سهيل عن أبيه
أن رسول الله ﷺ قال هذه النار جزء من مائة جزء من جهنم
No references are available.
Its isnad is sahih. Here it is uniquely worded as "a hundred parts," whereas it has occurred many times before worded as "seventy parts." What is intended by both numbers is to draw attention to the intense heat of the Fire.