"The Mosque was built right over the walls of the demolished earlier structure, i.e., temple after levelling them. No independent foundations were laid for the mosque. In a hurry to raise the mosque, self-same material, i.e., bricks and stones of the demolished structure were used which is evident from the fragmentary nature of bricks. No full bricks have been found in the walls of the mosque. Secondly, the size and texture of the bricks (wherever length and width are available separately) tally with the size of bricks used in the demolished temple. Normally, structures of different periods have bricks of different sizes and texture."
January 1, 1970
https://en.wikiquote.org/wiki/Archaeology_of_Ayodhya