The Messenger of Allah ﷺ said, "In Paradise there are one hundred ranks, and between each two ranks is a distance of one hundred years."
حدثنا عباس العنبري حدثنا يزيد بن هارون أخبرنا شريك عن محمد بن جحادة عن عطاء
قال رسول الله ﷺ في الجنة مائة درجة ما بين كل درجتين مائة عام
Sourcing, sahih. Ahmad narrated it in 2/292 from Yazid bin Harun with this same chain. The hadith has corroborating narrations in Bukhari, no. 2790, 7423, and Ahmad, 316/5, and others. See also no. 2531.Ataa is Ibn Abu Rabah.