$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
4.41
\begin{equation} \begin{gathered}\label{equation:injective-isofibration-well-founded} \xymatrix@R =50pt@C=50pt{ A \ar [d] \ar [r] & \mathscr {F}(q) \ar [d]^{\theta _{q}} \\ B \ar [r] \ar@ {-->}[ur] & \varprojlim _{p < q} \mathscr {F}(p) } \end{gathered} \end{equation}