What is the ruling of Sharia on unregistered marriage?
                                All perfect 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.
In order for a marriage contract to be considered valid, there has to be a Wali (Guardian) of the bride, two honorable witnesses and the contract has to be documented at an Islamic court. And Allah The Almighty Knows Best.
                             
                        
                            
                                
                                What is the ruling on not fulfilling a vow?
                                A vow is a commitment towards Allah, The Almighty, and so, it should be observed as much as possible, and it is impermissible to take it lightly. Allah, The Exalted, Says –in commending the believers (What means): "(Because) they perform the vow and fear a day whereof the evil is wide-spreading." [Al-Insan/7].
                             
                        
                            
                                
                                What is the ruling on having brotherly ties between a strange man and a strange woman, and is the former considered a Mahram (unmarriageable) to the latter?
                                Such a relation between a strange man and a strange woman is forbidden in Islam because it involves forbidding what Allah has allowed by marriage, and allowing what Allah has forbidden such as looking and the like. Such a relation doesn`t render any act lawful between them, thus they are forbidden to look at each other, have a Khulwah (seclusion), and travel together.
                             
                        
                            
                                
                                Which hour coincides with the last third of the night?
                                This hour could be figured out by calculating the number of night hours which start at sunset, and end at dawn break, then the total is divided on three to get the result.