Should one fulfill his vow of donating an animal to the poor and needy with one sheep although he had repeated the vow several times?
                                Each vow has to be fulfilled, and repeating the words of the same vow for confirmation renders its fulfillment obligatory as one vow. As for multiple vows, they have to be fulfilled as well.
                             
                        
                            
                                
                                Is it permissible for a Muslim physician to specialize in gynecology obstetrics, and what is the ruling on working as such?
                                Some fields of knowledge are an individual duty while others are a collective one, and specializing in gynecology obstetrics is a collective duty. However, if there were female physicians to treat women, then there is no need for a male gynecology obstetrics specialist to look at women`s Awrahs (private parts) except in necessary situations since the jurisprudential maxim says:” Necessity must only be assessed and answered proportionately.” And Allah Knows Best.
                             
                        
                            
                                
                                Is it permissible for a woman to die her hair black?
                                Praise be to Allah the Lord of the Worlds. May His peace and blessings be upon our Prophet Mohammad and upon all his family and companions.
It is permissible for a woman to dye her hair with other than black at any time she likes, even during Ramadan since applying the dye doesn`t invalidate the fast. And Allah The Almighty Knows Best.
                             
                        
                            
                                
                                What is the ruling on not offering prayer in a nearby mosque, and going to a distant one?
                                All perfect praise be to Allah the Lord of the Worlds. May Allah`s peace and blessings be upon our Prophet Mohammad and upon all his family and companions.
Praying in the nearby mosque takes precedence unless there was a circle of knowledge, or a larger congregation in the distant mosque provided that the congregational prayer in the nearby mosque isn`t undermined. And Allah Knows Best.