  We consider hadronic weak decays of beauty-baryons into charmless baryons and
pseudoscalar mesons in a general framework based on $SU(3)$ decomposition of
the decay amplitudes. The advantage of the approach lies in the ability to
perform an $SU(3)$ analysis of these decays without any particular set of
dynamical assumptions while accounting for the effects of an arbitrarily broken
$SU(3)$ flavor symmetry. Dictated by the symmetries of the effective
Hamiltonian that allow us to relate or neglect reduced $SU(3)$ amplitudes, we
derive several sum rule relations between amplitudes and relations between $CP$
asymmetries in these decays and identify those that hold even if $SU(3)$ is
broken.
