ðə ɹˈuːtli ˈoʊθ ɪz fˈɜːst mˈɛnʃənd ɪnðə wˈaɪt bˈʊk ʌv sˈɑːɹnən ɹˈɪʔn̩ wˈʌn θˈaʊzənd fˈoːɹhˈʌndɹɪd sˈɛvənti, bˈeɪst ˌɔn ɐ sˈoːɹs dˈeɪɾᵻd sˈiː. wˈʌn θˈaʊzənd fˈoːɹhˈʌndɹɪd twˈɛnti.
The Rütli Oath is first mentioned in the  White Book of Sarnen (written 1470, based on a source dated c. 1420).