Abu Dawud Book 2, Hadith Number 1369.

Narated By ‘Aisha : The people used to pray (tarawih prayer) in the mosque during the Ramadhan severally. The Apostle of Allah (PBUH) commanded me (to spread a mat). I spread a mat for him and he prayers upon it. The narrator then transmitted the same story. The Prophet (PBUH) said: O people, praise be to Allah, I did not pass my night carelessly, nor did your position remain hidden from me.