Question: What rituals are obligatory at the birth of a child and when should they be performed? Is shaving the head of the newborn also a must?
    Answer: Only two things are obligatory at the birth of a child: 

    i. Saying Adhan in the right ear and Iqamah in the left 
    ii. Circumcision 

    Both should be done as early as possible. No particular day has been fixed by the Shari‘ah. Thanking the Creator through animal sacrifice or through some other way is optional. 
    The custom of shaving the hair of the newborn has no religious basis.