what exactly did kurama mean?

[Charybys]

When he said he'd be put to sleep? I don't recall a time where he was knocked out.. or did he mean death?

 

[Omegga Shenron]

he would run out of chakara and fall asleep

 

[Zealous Sparks]

He essentially ran out of chakra so he will fall unconscious for an unspecified length of time.

 

[Angelic.]

euthanize him bc he has rabies

 

[MaGilla]

He's gonna be sleeping until his other half is sealed inside naruto.

 

[CrimsonReaper]

He'd like hibernate till he restores enough chakra to wake up again.

 

[Naruto D Luffy]

he restores enough chakra to wake up again.