Is it permissible for a Christian man to embrace Islam in secret and is it permissible for a Muslim woman to marry him?
                                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.
His embracing Islam in secret is between him and Allah; however, it isn`t permissible for a Muslim woman to marry him except after he declares his Islam and it is ascertained that he is sincere about that. And Allah The Almighty Knows Best.
                             
                        
                            
                                
                                What is the ruling of Sharia on woman shaking hands with non-Mahram man?
                                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.
The Messenger of Allah (PBUH) said: "It is better to be stabbed in the head than touch a woman to whom one isn`t related." [Transmitted by Al-Tabarani /Al-Mo`jam Al-Kabir, Hadith No.16880]. Accordingly, it is forbidden for men to shake hands with non-Mahram* woman. And Allah The Almighty Knows Best.
 
 
* The women/men that you are allowed to marry. It includes all women/men other than mahram (including cousins).
                             
                        
                            
                                
                                What is the ruling of Sharia when a man releases his sperm out of his wife`s vagina?
                                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.
This is called coitus interruptus and it is permissible according to Sharia when practiced by agreement of both spouses. And Allah The Almighty Knows Best.
                             
                        
                            
                                
                                Is buying and storing gold bars for profit permissible or prohibited?
                                Buying and storing gold bars for profit is permissible, and there is no harm in it. And Allah The Almighty Knows Best.