Sayyiduna Anas bin Malik (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) was the best of people in character. Sometimes the time of prayer would come while he (peace and blessings be upon him) was in our house. At his (peace and blessings be upon him) command, the place would be swept, water sprinkled and the mat spread out; then the Prophet (peace and blessings be upon him) would stand for prayer, and we would stand behind him (peace and blessings be upon him), and he (peace and blessings be upon him) would lead us in prayer. His (peace and blessings be upon him) mat at that time was made of palm branches.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4279