What was the Prophet Muhammad's (saw) reaction when 'A'isha noticed he had shortened the two rak'ahs of the dawn prayer?
 'A'isha reported that the Messenger of Allah (may peace be upon him) observed two rak'ahs of the dawn prayer and he shortened them (to the extent) that I (out of surprise) said:                      Did he recite in them Surah Fatiha (only)?