amjaddamen
brother
Once there was a scholar conducting tawaf ( circling around ka'ba in hajj or 'amrah) ,he heard amuslim saying this du'a while conducting tawaf :
Allah almighty ,please forgive my mother ,
Allah almighty ,please forgive my mother ,
Allah almighty ,please forgive my mother ,
upon finishing twaf the scholar followed the man and asked him wonderfully :
brother ,I heard you making du'a only for your mother and never for your father ??
the man said : my mother is a weak woman , but my father can manage his own
!!! 
)