He issued a conditional divorce and based it on his wife’s intention
Question

                One of my friends accused me and my wife of wanting to cause separation between him and his wife, and said that my wife said something to his wife seeking to cause separation between them. Because I was so angry, I said: My wife will be thrice divorced if she said that to your wife. My intention was that if she had said it with the intention of causing separation between him and his wife. After that we found out that the whole thing was the result of rumours and troublemakers. 

Is my wife divorced as a result of that?.
Praise be to Allah.Firstly: 
Undoubtedly 
    you made a mistake by uttering a threefold divorce. You should be cautious 
    and not hasty, and you should avoid mentioning divorce in what you say, 
    whether at times of anger or otherwise. 
Secondly: 
If the 
    matter is as you described, and you said, “My wife will be thrice divorced 
    if she said that to your wife,” meaning thereby that if your wife said it 
    with the intention of causing separation between your friend and his wife, 
    but your wife had no such intention, then divorce has not taken place, 
    because the Prophet  (peace and blessings of Allaah be upon him) said: 
    “Each person will have but that which he intended.” Narrated by al-Bukhaari 
    (1) and Muslim (1907). 
Whoever 
    speaks the words of divorce in general terms but bases it on his intention, 
    that will be accepted from him, so long as his wife does not refer it to the 
    qaadi (judge). As to whether it should be accepted by the judge, there is a 
    difference of opinion among the scholars. 
Whoever 
    swears that he will divorce his wife if she does not enter the house, then 
    claims that he meant it to be for a month, his statement that it was limited 
    to a month should be accepted.  
Ibn Qudaamah 
    (may Allaah have mercy on him) said: Imam Ahmad said concerning one who 
    swears that she should not enter the house and says, I meant for a month, it 
    should be accepted from him. End quote from al-Mughni (7/320). 
The 
    intention in this case has put a limit to the general wording, and each 
    person knows best what his intention is, and Allaah is watching all of that 
    and nothing is hidden from Him. 
And Allaah 
    knows best.