In Islam dreaming is just a natural phenomenon. There is no special meaning.
Here the Q/A regarding dreams: (from http://www.islamonline.net/servlet/Satellite?pagename=IslamOnline-English-Ask_Scholar/FatwaE/FatwaE&cid=1119503543850 - IslamOnline.net )
Respected scholars, As-Salamu `alaykum. I'd like to know the fatwa concerning the interpretation of dreams. I also heard that post-dawn dreams are meaningless and are mainly due to satanic temptation and nothing more. Jazakum Allah khayran.
Dear sister in Islam, we would like to thank you for your interesting question and the great confidence you place in us. May Allah reward you abundantly for your interest in knowing the teachings of Islam!
First of all, dreams or visions are not sources of legislation, so it shouldn’t be threatening or frightening to anybody and it doesn’t have a binding force of legal rules.
Second, the interpretation of dreams is not an experimental knowledge but a divine gift bestowed on whom Allah wills. It is not a science that has certain laws; it is merely based on opinions, and hence what is written or said about the interpretation of dreams is not reliable and cannot be taken for granted.
Elaborating on the interpretation of dreams, we’d like to cite for you the following fatwa issued by Sheikh `Atiyyah Saqr, former head of Al-Azhar Fatwa Committee, on this issue:
“As for interpretation of dreams, this issue is certainly one of hidden secrets known only to Almighty Allah, the Knower of the Unseen. So all that is written or said of the interpretation of dreams is just a matter of personal reasoning and is not reliable. This is because this issue is one of the Unseen matters that have something to do with spirits and their interaction with outer worlds. It is not true that it has certain laws; it is merely based on opinions through which some people issued many books claiming to be authoritative reference on interpreting dreams. On this, Sheikh Abdul Ghani Al-Nablusi has written a book entitled Ta`tir al-Anam fi Ta`bir al-Manam. As the author of the book himself, he admits that the interpretation of dreams varies from one person to another and from one atmosphere to another.
However, dear sister, there are certain facts you should know about, and all of them are based on authentic Hadiths quoted from the Prophet (peace and blessings be upon him); they are:
First Hadith: “A vision is from Almighty Allah (it's a form of divine inspiration) whereas a dream is from Satan. When any one of you have a bad dream, let him/her spit out (without saliva) to the left side and recite the two ‘Protective Surahs’ (An-Nas and Al-Falaq) and the dream will not harm him/her, Allah willing.”
Second Hadith: “At the approach of the Hour, the Muslim will have a true vision, and honesty will help him to have the clearest and truest vision. Moreover, seeing a true vision is the 45th degree of prophethood. Vision is of three kinds: the good one with glad tidings from Allah; the bad dream, which is from Satan to invade hearts with sadness; the third one is the effect of an aforethought matter. So if any one of you sees something sad in a vision, he should offer two rak`ats in prayer and never reveal it to anyone.”
Third Hadith: The Prophet said that if anyone sees him in his vision, he has truly seen him, for Satan can never disguise himself in the honorable form of the Prophet (peace and blessings be upon him).
To conclude, the interpretation of dreams is not an experimental knowledge to pass on to people, generation to generation. It is a divine gift bestowed on whom Allah wills. Prophet Joseph's talent of interpreting dreams is a case in point. But, we should say that dreams or visions are not sources of legislation, so it shouldn’t be threatening or frightening to anybody and it doesn’t have a binding force of legal rules.”