some scholars mentioned the wisdom behind saying the adhan in the ear of a baby at birth and praying the janaza when this individual passes away. it is a subtle indication to us to spend our lives in the masjid, i.e. in the servitude of Allah because when the adhan is pronounced, a man comes to the masjid and stays there till the jama'ah. the adhan at birth is when our submission to Allah should begin and we should spend our lives in the masjid after this adhan waiting for the jama'ah; i.e. our own janaza.
