See Sura Muhammad verse 15
Hadith from Ubada bin Samit(Allah b pleased with him),reporting our Prophet(paece and blessings of Allah b upon him)"Heaven contains a 100 layers. the distance between every 2 layers is as wide as it is between earth and sky.Firdaus is the highest.4 canals of heaven hav come out from it. Allah's throne will b over it.Hence whenever u entreat Allh for Heaven, ehtreat for Firdaus"Tirmidhi
Kauther has indeed been bestowed on Muhammed (sallahu 3alaihi wassallam)It is whiter than milk and sweeter than honey-tirmidhi
c also sura dahr 76:5/6
There is a drink called kafur, which causes peace of mind.

Also a fountain called Salsabeel