What did Abu Huraira note when he saw a person leaving the mosque after the call to prayer had been announced?
 Abu Sha'tha' al-Muharibi reported on the authority of his father, who said:                      I heard it from Abu Huraira that he saw a person getting out of the mosque after the call to prayer had been announced. Upon this he remarked: This (man) disobeyed Abu'l-Qasim (may peace be upon him).