Hadith.3443 - It is narrated from Sama'ah, who said
I asked him about a man who said to three of his slaves, "You are free," while he actually had four slaves.
Then someone said to him: "You have freed all your slaves."
He replied: "Yes."
I asked: "Is the emancipation binding for all four because he generalized them, or is it limited to the three whom he specifically mentioned?"
Imam (as) said: "Emancipation is binding only for those he specifically freed."