It was narrated that Ibn 'Abbas said: "I was with the Prophet P.B.U.H and a man came to him and said: 'Last night while I was sleeping, I saw that I was praying towards the b!'se of a tree. I recited (an Ayah of) prostration and prostrated, and the tree prostrated when I did, and I heard it saying: (0 Allah, reduce my burden of sin thereby, reward me for it and store it for me with You).' Ibn 'Abbas said: "I saw the Prophet P.B.U.H recite (an Ayah of) prostration and then prostrate, and I heard him saying in his prostration something like that which the man had told him the tree said." (Hasan)