  We determine (non-)triviality of Samelson products of inclusions of factors
of the mod $p$ decomposition of $G_{(p)}$ for $(G,p)=(E_7,5),(E_7,7),(E_8,7)$.
This completes the determination of (non-)triviality of those Samelson products
in $p$-localized exceptional Lie groups when $G$ has $p$-torsion free homology.
