>>13168083tesla never said that tho
do a search for the source, none, but this was knew in antiquety:
>page 23 On the observance of the Three Hours of Prayer the third, the sixth, and the ninth Cyprian offers a mystical explanation, with which we may compare that given by Clement of Alexandria. Clement writes : * "If there are any who assign fixed hours to prayer, such as the third 3, the sixth 6, and the ninth 9 . . . the triple distribution of the hours and their observance by corresponding prayers is familiar to those who are acquainted with the blessed triad of the holy "mansions" (the Trinity)""St. Cyprian on the Lord's prayer"
https://archive.org/details/stcyprianonlords00cypruoft/page/22/mode/2up 