He made divorce conditional upon something, then he forgot what it was
Question

                My husband issued a conditional divorce four years ago, but I cannot remember exactly what he said. I tried to remember, but to no avail, as he said to me: If you do such and such, then you are divorced. When I asked my husband, he said that he did not remember what he had stipulated either. I am afraid that the condition he stipulated in that conditional divorce may have been fulfilled, but by what I do not remember, and my husband does not remember either. I am very confused about my situation, so I hope you can help me.
Praise be to Allah.
	If someone makes 
	divorce conditional upon something, such as if he says: “If you visit 
	So-and-so, then you are divorced,” then divorce takes place when the 
	condition stipulated is fulfilled, according to the view of the majority of 
	fuqaha’.

	Some of the 
	scholars are of the view that if he intended thereby to threaten her, urge 
	her to do something or prevent her from doing something, then it comes under 
	the heading of an oath (yameen), for which expiation (kafaarah) is required. 
	This is the view favoured by Shaykh al-Islam Ibn Taymiyah and a number of 
	other scholars, and it is the basis for fatwas on this website.

	Based on that, 
	if your husband said that he did not remember the action stipulated, but he 
	did not intend to issue a divorce – rather he merely intended to prevent you 
	from doing something – then he should offer expiation for his oath, so as to 
	be on the safe side.

	If he says that 
	he did intend to issue a divorce, but he forgot what the condition was, then 
	there is no blame on you for doing whatever you want of permissible things, 
	and no divorce will take place, because the basic principle is that the 
	marriage remains valid, and no divorce occurs when there is doubt.

	Al-Majd Ibn 
	Taymiyah (may Allah have mercy on him) said in al-Muharrar (2/60): If 
	there is any doubt concerning divorce or the conditions stipulated for it to 
	occur, then what matters is the certainty that the marriage remains valid. 
	End quote.

	al-Baghawi (may 
	Allah have mercy on him) said in at-Tahdheeb (6/104): If a man is 
	uncertain as to whether he has actually divorced his wife, he should assume 
	that it has not happened, because the basic principle is that the marriage 
	remains valid. The same applies if he is uncertain about the number of 
	divorces: he should assume that it is the lower number, because that is what 
	is certain. End quote.

	And Allah knows 
	best.