Question: I wiant to know the hadith regarding the Rawdhah of Rasulullah s.a.w and it’s importance of this place?

Answer: Two of the ahadith mentioned below will hopefully fulfil your quest:

(1) Narrated ‘Abdullah bin Zaid Al-Mazini r.a:
Allah’s Apostle said, “Between my house and the pulpit there is a garden of the gardens of Paradise.” References: [1] Bukhari:1195 [2] Muatta Malik:472/473 [3] Baihaqi vol-5, p-247

(2) Narrated Abu Huraira r.a: The Prophet said, “Between my house and my pulpit there is a garden of the gardens of Paradise, and my pulpit is on my fountain tank (i.e. Al-Kauthar).”
References: [1] Bukhari:1196 [2] Muslim:1391

NOTE: The first hadith mentioned from sahih al-Bukhari is exactly written in one of the gate before entering the place “Riyad al Jannah” and straight on to the Rawdhah of Rasulullah s.a.w. in Masjid al-Nabawi.