  Two body nonleptonic weak decays of bottom mesons to a pseudoscalar meson and
an axial-vector meson involving charmed states are studied using the
non-relativistic quark model. We calculate the branching ratios of these decays
by employing the factorization hypothesis. Obtained results are in good
agreement with the existing experimental data. We also calculated the branching
ratios in the light of heavy quark symmetry constraints and compared with the
exiting theoretical analyses.
