The $^{3}_{\Lambda}{\rm H}$ lifetime relative to the free $\Lambda$ lifetime as a function of the ${\rm B}_{\Lambda}$ for pionless EFT  (green), $\chi$EFT  (light blue), and the original $\pi$ exchange calculations  (blue). The red point represents the measurement presented in this Letter with the statistical and total uncertainties depicted with lines and an ellipse, respectively.