Hadith is the sayings and actions of the prophet Muhammad, it is considered along with the Quran the main sources of all Islamic Laws.
"God has bestowed upon me six favors which the former Prophets did not enjoy: I have been endowed with the gift of pithy and perfect speech. I was granted victory owing to my awe. The spoils of war were made lawful unto me. The whole earth has been made the place of worship for me and it has become the means of purification for me also. In other words in my religion, offering of prayers is not confined to certain specified places of worship. Prayers can be offered at any place over the earth. And in case water is not available it is lawful for my people to perform ablutions with earth soil (Tayammum) and to cleanse themselves with the soil if water for bathing is scarce. I have been sent by Allah to carry His Divine message to the whole world. And the line of prophets has come to its final end in me.