  Inspired by the $P_{cs}(4459)$ reported by the LHCb collaboration recently,
we investigate the $P_{cs}(4459)$ production from $\Xi_b$ decay in a molecular
scenario using an effective Lagrangian approach. With different $J^P$
assignments to $P_{cs}(4459)$, the magnitude of branching fractions of $\Xi_b
\to P_{cs}(4459) K$ is estimated, which is of the order of $10^{-4}$. Together
with the decay properties of $P_{cs}(4459)$, the present estimations could be
further testified by precise measurements and contribute to a better
understanding of the molecular interpretations and the exploration of $J^P$
quantum numbers of $P_{cs}(4459)$.
