He is asking about a ruqyah so that he will be blessed with a child
Question

                One of my brother is married for last 5 years and till today they do not any children. The reason is best know by Allah the Almighty. The couple has done all medical checkups etc and the doctors confirmed that everything is OK with both of them and just wait for the right time which Allah has planned for you and you will a child. But now his parents are not having any patience and telling the couple to do the following act “they are saying that you should fast for twenty one days and recite one of the beautiful attributes of Allah i.e AL-MUSSAWRO (meaning of this name of Allah is Creator of the Face) for seven times blow it on the glass water and break your fast with this water Insallah Allah will give a child”. Now I wan to know is this practice is correct in the light of Quraan & Sunnah or not? If it is correct practice then provide some sort of proof in the light of Quarran & Sunnah
Praise be to Allah.
    This kind of ruqyah that has been suggested to the husband 
    and his parents is not something that has been prescribed in sharee’ah, 
    because there is no proof of it in the Qur’aan or saheeh Sunnah as far as we 
    know. Hence the couple should refrain from doing this and should turn to the 
    kinds of ruqyah that are prescribed in sharee’ah and the du’aa’s that are 
    proven in the Qur’aan and saheeh Sunnah. 

    With regard to calling upon Allaah by His names for healing 
    from sickness, including infertility, this is permissible because of the 
    general meaning of the verse (interpretation of the meaning): 
“And (all) the Most 
    Beautiful Names belong to Allaah, so call on Him by them”

    [al-A’raaf 7:180]

    And it was proven that the Prophet  (peace and blessings 
    of Allaah be upon him) did that, as he recited ruqyah for some people by 
    saying, “Adhhib al-ba’s Rabb an-naas, wa’shfi anta al-Shaafi, laa 
    shifaa’a illa shifaa’uka shifaa’ laa yughaadir saqaman (Take away the 
    pain, O Lord of mankind, and grant healing, for You are the Healer, and 
    there is no healing but Your healing that leaves no trace of sickness).” 
    Narrated by al-Bukhaari, 5743; Muslim, 48, 47, 46. See Fataawa al-Lajnah 
    al-Daa’imah, no. 9120, in Majallat al-Buhooth al-Islamiyyah, 
    issue no. 27, p. 64. 
But specifying a 
    particular name of Allaah such as choosing the name al-Musawwir for praying 
    for healing is something for which evidence is required. If there is no such 
    evidence then using a particular name for du’aa’ is to be regarded as 
    something that is not prescribed in sharee’ah. What is prescribed with 
    regard to du’aa’ is for the person who is making du’aa’ to choose names of 
    Allaah that befit his request, such as saying al-Ghaffaar (the 
    Oft-Forgiving) when praying for forgiveness, and so on. 

    It should be noted that the matter of having children or 
    otherwise is something that is subject to the will and decree of Allaah. 
    Allaah has told us about that in His Book, where He says (interpretation of 
    the meaning): 

    “To Allaah belongs the kingdom of the heavens and the 
    earth. He creates what He wills. He bestows female (offspring) upon whom He 
    wills, and bestows male (offspring) upon whom He wills.

    50. Or He bestows both males and females, and He renders 
    barren whom He wills. Verily, He is the All‑Knower and is Able to do all 
    things”

    [al-Shoora 42:49-50]

    This is something that is decreed by Allaah alone. 

    The couple should turn to Allaah and ask Him for righteous 
    offspring; they should turn to du’aa’ and dhikr. Concerning that Allaah says 
    in His Book: 

    “And those who say: ‘Our Lord! Bestow on us from our wives 
    and our offspring the comfort of our eyes, and make us leaders of the 
    Muttaqoon (the pious)’”

    [al-Furqaan 25:74]

    If there is some sickness that has caused the problem, there 
    is nothing wrong with treating it with permissible medicines, because of the 
    general meaning of the words of the Prophet  (peace and blessings of 
    Allaah be upon him): “Treat disease, for Allaah has not created any disease 
    but He has also created a cure for it, except for one disease, namely old 
    age.” Narrated by Abu Dawood from Usaamah ibn Shareek, no. 3855; classed as 
    saheeh by al-Albaani. 

    And he  (peace and blessings of Allaah be upon him) said: 
    “Allaah has not send down any disease but He has also sent down the cure.” 
    Narrated by Ibn Maajah, 3482; classed as saheeh by al-Albaani. 
No matter what the 
    cause of this problem, the Muslim has to depend on Allaah, put his trust in 
    Him and accept His will and decree with patience. He must have certain faith 
    that there is reward and much good in that, by Allaah’s leave. He should 
    think about the situation and lives of other people; some people are tested 
    with bad offspring who cause them misery and hardship, and others have 
    handicapped offspring and cannot bear that, and other such cases such as 
    parents suffering from children’s disobedience, severing of family ties, and 
    so on. Allaah never decrees for the believer anything but that which is good for him, as the Prophet  (peace and blessings of Allaah be upon him) 
    said: “How wonderful is the affair of the believer, for all his affairs are good, and that does not apply to anyone apart from the believer. If something good happens to him he is grateful, and that is good for him, and if something bad happens to him he bears it with patience, and that is good for him.” Narrated by Muslim, no. 2999.