| Incidentally, it is said that the popular name of 'Mitsui-dera Temple' was derived from a temple of 'Mii' (a spring water for Emperors), because the sacred spring water was used for ubuyu (a baby's first bath) for three generations of emperors: Emperor Tenchi, the Emperor Tenmu and the Empress Jito. |
なお、「三井寺」の通称は、この寺に涌く霊泉が天智・天武・持統の3代の天皇の産湯として使われたことから「御井」（みい）の寺と言われていたものが転じて三井寺となったという。 |