  In this article, the three point QCD sum rules is used to compute the strong
coupling constants of vertices containing the strange bottomed ( charmed )
mesons with pion. The coupling constants are calculated, when both the bottom (
charm ) and pion states are off-shell. A comparison of the obtained results of
coupling constants with the existing predictions is also made. Key words:
strong coupling constant, meson, QCD sum rules, bottom, charm.
