I am looking for a clarification. As per the DMG (p.192), the Ring of spell storing is "charged: when:
Any creature can cast a spell of 1st through 5th level into the ring by touching the ring as the spell is cast. The spell has no effect, other than to be stored in the ring.
My question is this: If someone (the party rogue for example), were to touch an enemy caster with the ring during their casting of a spell, would the ring's "charging" effect happen?
It is my understanding that if it does, one of the following two effects would take place:
The ring would store the spell if there is enough space.
The ring would cause the spell to fail, as per the next sentence in the DMG:
If the ring can't hold the spell, the spell is expended without effect.
Now I am looking for a RAW or RAI answer, as I am fully aware that as a DM I can override if I think it is necessary.