It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "On the night of the Ascension (Mi'raj) I saw Ibrahim (peace be upon him), and he said: 'O Muhammad, convey greetings of peace from me to your Ummah, and tell them that the soil of Paradise is pure and its water is sweet, that it is an open plain, and that its plants are: Subhan Allah (Glory be to Allah), wal-hamdu lillah (and praise be to Allah), wa la ilaha illallah (and there is no god but Allah), wallahu akbar (and Allah is the Greatest), wa la hawla wa la quwwata illa billah (and there is no power and no strength except through Allah).'"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10325