Should he still do the marriage contract when the girl’s father has died and her mother is still in mourning?
Question

                Is it permissible for me to do the marriage contract (without celebrations) with a girl when her family is still grieving the loss of the head of the family, i.e., her mother’s mourning period has not yet ended (the date of the wedding will be only three months since the father’s death). The marriage was agreed upon and was planned before her father died. Should I delay it? Please note that I am away from my homeland and it is difficult for me to organize the wedding at a later date because of my work situation.
Praise be to Allah.It is permissible to do the 
    marriage contract with this girl even if her mother is still in the ‘iddah 
    period following her husband’s death, because there is no shar’i reason to 
    prevent that, and it is not essential for the marriage contract to be done 
    that there be a celebration or party. It is sufficient for the wali 
    (guardian) and two witnesses to be present. But you must pay attention to 
    the feelings of the girls and her family. If this will not upset them or it 
    will detract from their joy, then praise be to Allaah. Otherwise, you should 
    delay the marriage contract until their grief at what has befallen them has 
    abated, and the mother is able to wear her adornment at her daughter’s 
    wedding if she wants to do that. It is well known that during the ‘iddah 
    following her husband’s death, a woman is not allowed to wear jewellery and 
    adorn herself or wear perfume. Please see the answer to question no.
    13966. 
To sum up: There is no 
    impediment in terms of shar’i rulings to doing the marriage contract in such 
    circumstances, if the girl and her family agree to that, and it will not cause them any harm or upset them. 
And Allaah knows best.