The foregoing study of the architecture and site of the Baburi Masjid has shown, unequivocally and without any doubt, that it stands on the site of a Hindu temple which originally existed in the Ramkot on the bank of the river Sarayu, and Hindu temple material has also been used in its construction.
Source, in full
Nath, R., & Historical Research Documentation Programme (India). (1991). Architecture & site of the Baburi Masjid of Ayodhya: A historical critique. Jaipur: Historical Research Documentation Programme. Quoted from Elst, Koenraad (2003). Ayodhya: The finale ; science versus secularism in the excavations debate.