Namaz - Salaah [Prayer]
Hadees Shareef states that it was winter and the Holy Prophet [Sallal Laahu Alaieh Wa Sallam] came out of his Hujraa Shareef. He went to a tree, held its branch and shook it. This caused its leaves to fall off easily. He said: "When a Muslim reads Namaaz for Almighty Allaah, then his sins fall like the leaves of a tree".