In the paper under review, the author derived the following results about the boundary behavior of an \(M\)-harmonic Besov function on the unit ball in \(C^ n\). Let \[ \begin{aligned} B(\zeta,\delta)&=\{\eta\in S:\;| 1- \langle\zeta,\eta\rangle|1\). Suppose that \(\mu\) is a positive measure on \(S\) that satisfies \(\mu(B(\zeta,\delta))\leq\delta^ n\) for all \(\zeta\in S\) and \(\delta>0\). If \(s