Musannaf Ibn Abi Shaybah

Hazrat Sha'bi (may Allah have mercy on him) said that intention is among the hidden things; intention is not considered in apparent matters.

Hasan (may Allah have mercy on him) said that if a man gives his wife one divorce and intends three, then only one divorce will take place.

Hazrat Hakam (may Allah have mercy on him) says that one divorce will take place.

Hazrat Hakam (may Allah have mercy on him) was asked: If a person says to his wife, "You are divorced," and makes a gesture of three with his hand, what is the ruling? He replied: Only one divorce will take effect.

Hazrat Sha'bi (may Allah have mercy on him) says that if a person was asked whether he had divorced his wife, and he indicated four with his finger and did not say anything, then he has separated from his wife.