In 715, a year of the serpent, fifth of the decade, on Thursday, the first day of the waxing
moon of the fourth month, at two nalika and five bat in the morning, the King was
pleased to order that a holy monastery, with a preaching hall and a great holy reliquary, be
established at the Wiang Lek Royal Residence. Then he bestowed upon it the name of
Phutthaisawan Monastery. (The Royal Chronicles of Ayutthaya)