Ruling on calling a child Momin (Mu’min)
Question

                Can i keep my newly born sons name ' Momin' ?

I really like this word momin, and considering the meaning and values of this name i would like to keep my son's name as momin, in good faith, as we believe that name brings an impact on a childs features and habits.

However i have been discouraged by relatives that momin is term which Shias regard themselves as alot. also it is said to be Allah subhana ta ala's name, so whether we should put Abdul before it. It is also said to be our holy prophet Mohammad Sallallahu wa aley wassallam's name, so should we put Mohammad before Momin?.
Praise be to Allah.
      It is makrooh to call a child Momin (or Mu’min) for two 
      reasons. 

    1.It involves self-praise.

    2.It may be said in a wrong 
    context. If it is asked, “Is Momin in the house?” or “Have you seen Momin?” 
    [which is Arabic sounds like asking “is there a believer in the house” or 
    “Have you seen a believer?”] and the answer is no, if he is outside the 
    house or has not been seen, this is a disliked usage which may give the 
    impression that there is no believer in the house or that he has not seen 
    any person who is a believer.

    There are reports which show that it is not allowed to use 
    names which imply self praise or may be used in a wrong context. Al-Bukhaari 
    (192) and Muslim (2141) narrated from Abu Hurayrah that Zaynab’s name was 
    Barrah (which means righteous) and it was said that she was praising 
    herself, so the Messenger of Allah (blessings and peace of Allah be upon 
    him) named her Zaynab. 

    And Muslim narrated (2142) that Muhammad ibn ‘Amr ibn ‘Ata’ 
    said: I called my daughter Barrah, but Zaynab bint Abi Salamah told me that 
    the Messenger of Allaah (blessings and peace of Allah be upon him) had 
    forbidden this name. (She said) I was given this name, but the Messenger of 
    Allaah (blessings and peace of Allah be upon him) said: “Do not praise 
    yourselves, for Allaah knows best who among you is righteous.” They said: 
    What should we call her? He said: “Call her Zaynab.” 

    And Muslim (2136) narrated that Samurah ibn Jundub said: The 
    Messenger of Allaah (blessings and peace of Allah be upon him) forbade us to 
    give our slaves four names: Aflah (prosperous), Rabaah (profit), Yasaar 
    (wealth) and Naafi‘ (beneficial). 

    This was also narrated by al-Tirmidhi (2836) with the words: 
    “Do not call your slaves Rabaah (profit), Aflah (successful), Yasaar 
    (wealth) or Najeeh (successful).” It was said: Is it a sin? It was said: 
    No. 

    Al-Nawawi (may Allah have mercy on him) said: What these 
    hadeeths mean is that bad or disliked names should be changed to good ones 
    and there are hadeeths which prove that the Prophet (blessings and peace of 
    Allah be upon him) changed the names of many of the Sahaabah, and he 
    explained the reason in two cases: where it has to do with the meaning, and 
    where it implies self praise or the fear that the name may be used in a 
    wrong context. End quote from Sharh Muslim. 

    With regard to the name of Allah, which is al-Mu’min with the 
    definite article al-, Allah says (interpretation of the meaning): 
    “He is Allaah, beside Whom Laa ilaaha illa Huwa (none has the right to be 
    worshipped but He), the King, the Holy, the One Free from all defects, the 
    Giver of security [al-Mu’min], the Watcher over His creatures” [al-Hashr 
    59:23]. 

    It is permissible to call your son ‘Abd al-Mu’min. 

    ‘Abd is not one of the names of the Prophet (blessings and 
    peace of Allah be upon him). Even if we assume it is one of his names, it is 
    incorrect to say Muhammad al-Mu’min or Muhammad Allah or Muhammad al-Raheem 
    if what is meant is ‘Abd al-Mu’min or ‘Abd-Allah or ‘Abd al-Raheem. 

    To sum up, you should call your son ‘Abd al-Mu’min if you 
    want to have this meaning in his name. Otherwise you should give him some 
    other good name in which there is no self praise or fear that it may be used 
    in a wrong context. 

    See also the answer to question no.
    7180. 

    And Allah knows best.