  In this work, we calculate the branching ratios of the color-allowed two-body
nonleptonic decays of the bottom baryons, which include the $\Xi_b\to
\Xi_c^{(*)}$ and $\Omega_b\to \Omega_c^{(*)}$ weak transitions by emitting a
pseudoscalar meson ($\pi^{-}$, $K^{-}$, $D^{-}$, and $D_s^{-}$) or a vector
meson ($\rho^{-}$, $K^{*-}$, $D^{*-}$, and $D_s^{*-}$). For achieving this aim,
we adopt the three-body light-front quark model with the support of hadron
spectroscopy, where the spatial wave functions of these heavy baryons involved
in these weak decays are obtained by a semirelativistic potential model
associated with the Gaussian expansion method. Our results show that these
decays with the $\pi^-$, $\rho^-$, and $D_s^{(*)-}$-emitted mode have
considerable widths, which could be accessible at the ongoing LHCb and Belle II
experiments.
