"Did you say it to him or to her?"

Translation: Řekli jste to jemu nebo jí?

[gSee4]

Why is Řekli jste to mu nebo jí wrong?

[JanLyko]

"Mu" is just a clitic form of "jemu". "Mu" (and other clitics) usually has the second position after the first part of a sentence.

https://en.wikipedia.org/wiki/Czech_word_order#Clitics

[BjrnMrtens]

How about "Řekli jste mu nebo jí to"? I think "Řekli jste mu to" is correct at least? This is so hard :)

[VladaFu]

No, that is impossible. Here we ask if it is him or her, the pronouns are stressed, you cannot use the short forms.

[BjrnMrtens]

Ahh! That makes sense now. Thanks!

[Lenka295922]

Proč je tady say a ne tell?

[VladaFu]

Obojí tu může být.

[venik212]

What is wrong with: To jsi řekl jemu nebo ji ?

[VladaFu]

This is actually possible, provided the "or"/"nebo" is exclusive and you stress the pronouns.

However, since we had zero reports for this, it hadn't been added.

[AgnusOinas]

Also note that, even after it's been added, your version might be rejected because "ji" is a different case. You need the dative here, which is "jí" with a long "í".

[venik212]

I'll pretend that I actually knew that and meant the dative jí...

[StevenMcKnight]

Am I correct in understanding that "jemu" and "ji" are locative pronouns in this example?

[VladaFu]

Dative, if you direct the action to someone or something (giving, witing,...) it is typically dative.