assalamoalikum 
as a new baby is born into a muslim household, The recitation of Aazan in the right and Iqaamat in the left ear of a new born baby becomes compulsory, which is fine!!!
but can sombody else apart from the father of the child do this i.e. the imam sahab
yes
can someone please provide the basis of this ritual..
Jazakallah.
asalamualaykum
The Sunnah of the Prophet - pbuh-teaches that when a baby is born s/he needs to be cleansed and dressed. A male adult, father or some one close in the family, should recite adhan in the right ear and iqamah in the left ear. In the world of spirit man declared his instinctive readiness to accept Allah as his Lord (al-Qur’an 7:172).
Hence the first sound to reach a baby’s ear should be the declaration of Allah’s greatness, so that the sound always reverberates in his memory and settled in his soul. It is mentioned in a hadith that the devil runs away by the sound of the adhan.
Ayesha (RA) mentioned, “I saw the prophet give adhan in the ear of al-Hussein ibn Ali when his mother, Fatima, gave birth to him”. (Ahmad, Abu Dawud and Tirmidhi).
When a child was born in a family, Ayesha (RA) would not ask whether it was a boy or girl, but she would ask “is it complete and sound?” so, if she was told that it was, she would say, “all praise and thanks for Allah, Lord of all creation”. (Bukhari)
It is also an excellent practice to give a bit of small chewed date to the baby, so that s/he starts his life with sweetness.
Ayesha (RA) said “new born children used to be brought to Allah’s messenger and he would supplicate for blessing for them and rub a chewed date upon his palate” (Muslim, Abu Dawud).
Hope this helps!
