"The original birthplace temple dated from the 10th or 11th century. Before its destruction the temple must have been one of the main pilgrimage centres of Ayodhya, _ especially on the occasion of Ramanwami .... The destruction of the temple would not have implied the end of all forms of worship in and around the holy site. Just as they do today,.. pilgrims may have assembled near the mosque to have darsan of the tihrtha, and in order to perform the puja special _ provisions may have been made ... .... The ritual of Ramanavami described in OA 22 (a recension of the Ayodhya Mahatmya), which is said to be carried out in the Janmasthan (OA 22.22), does not require a temple or the like and could therefore have been performed somewhere near the original holy spot in the 16th and following centuries. Such perseverance and flexibility of Hinduism under Muslim repression, which was demonstrated throughout the history of North India, could have provided an objective reason for the compiler of the OA recension not to delete or minimize his description of the Janamsthan despite its occupation by a mosque ..."
January 1, 1970
https://en.wikiquote.org/wiki/Hans_T._Bakker