[Avodah] Inviting Someone On Shabbos Who Uses the Eruv

[Isaac Balbin]

R' AM: wrote:

> I understand that they have the right to follow whichever posek they choose to follow. This would apply to any time they are on their own, choosing to do whatever their posek allows.
> 
> But if I hold that m'ikar hadin it is assur, why am I not violating lifnei iver when I ask them to do it?
> 
> Akiva Miller

It's the other way around. Acharonim discuss the situation where someone is at your house and you know THEY don't follow on a certain Psak in kashrus, but you hold that it's muttar, whether you have to tell them. The answer is yes.