There is chance for dream wetting, ejaculation or coming out of Mad'y with out our action.
Will it invalidate our fasting?
If it is in the months of Ramadan, is there any need to compensate it to another time?
No . If you ejaculate purposely or in other words if seed cells come out when you are awake then only it will affect your fast
-
1"in other words if seed cells come out when you are awake then only it will affect your fast" not always true. It can be involuntary too. – servant-of-Wiser Jun 25 '15 at 15:59
