In early days of Islam, observation of Muhammad's birth as a holy day was usually arranged privately and later there was an increased number of visitors to the Mawlid house that was open for the whole day specifically for this celebration.
In early days of Islam, observation of Muhammad's birth as a holy day was not celebrated. Recent past allowed the celebration to be usually arranged privately and later in order to infiltrate and counter Christianity there was an increased number of visitors to the Mawlid house that was open for the whole day specifically for this celebration.