How should a baby be put to sleep when the doctors say it is best to place the child on his stomach?
Question

                Can you please advice me on baby sleeping manner/position. Doctors say that to put baby lying down on her stomach is good, but i just came across about Muhammad prohibit that kind of position.
Praise be to Allah.
    Firstly: 

    With regard to the prohibition on sleeping on one's stomach, 
    it was narrated by Ahmad and Abu Dawood (5040) that Takhfah ibn Qays 
    al-Ghifaari said: When I was lying on my stomach in the mosque just before 
    dawn, a man nudged me with his foot and said: “This manner of lying is hated 
    by Allaah.” I looked and saw that it was the Messenger of Allaah  (peace 
    and blessings of Allaah be upon him). 

    Ibn Majaah (3724) narrated from Ibn Takhfah al-Ghifaari that 
    Abu Dharr said: The Prophet  (peace and blessings of Allaah be upon him) 
    passed by me and I was lying on my stomach. He kicked me with his foot and 
    said: “O Junaydib! This is how the people of Hell lie.” 

    The ahaadeeth which speak of the prohibition on sleeping on 
    one’s stomach vary in their degree of soundness. Some scholars classed them 
    as da’eef (weak) such as al-Bukhaari, al-Daaraqutni, Ibn Abi Haatim and Ibn 
    Rajab, and others classed them as saheeh or hasan, such as Ahmad Shaakir in
    Tahqeeq al-Musnad (14/248-249) and al-Albaani in Saheeh Abi Dawood. 

    Secondly: 

    Sleeping on one's stomach is harmful from a health point of 
    view, for both young and old. There are medical reports which speak of a 
    high death rate among infants who suffocated because they were put to sleep 
    on their stomachs, as well as allergies because of the nose being too close 
    to the bedding, if the bedding is made of sponge or wool and collects a 
    large number of germs and microbes. 

    Yes, sleeping on the stomach is good for expelling wind, but 
    always doing that is harmful, as stated above. 

    The child should become accustomed to sleeping on his right 
    side, because this is the best manner of sleeping, and is in accordance with 
    the Sunnah of the Prophet  (peace and blessings of Allaah be upon him), 
    and is beneficial for the body. 

    It says in a medical report: Sleeping on the right side is 
    the healthy position, because the left lung is smaller than the right, so 
    the heart is under less pressure and the liver is settled and not suspended, 
    and the stomach is resting comfortably on top of it, which as we have seen 
    makes it easier to eliminate the food that is in it after it has been 
    digested. Sleeping on the right side is also regarded as the best medical 
    procedure that makes it easy for the tubes of the left lung to expel mucus 
    discharges. 

    As for sleeping on the left side, it is not acceptable, 
    because in that case the heart will be beneath the pressure of the right 
    lung, which is larger than the left, and this will affect its function and 
    make it less active, specially in those who are elderly. The full stomach 
    will also be under pressure, which will increase the pressure on the heart 
    and liver – which is the heaviest organ – which will not be fixed, rather it 
    will be hanging, as it is located on the right side, so it will put pressure 
    on the heart and on the digestive tract which will delay elimination. 

    Experiments have proven that the passage of food from the 
    stomach to the intestines takes between 2.5 and 4.5 hours, if a person is 
    sleeping on his right side, but it takes 5 to 8 hours if he sleeps on his 
    left side. 

    See: al-Tibb al-Nabawi fi Daw’ al-‘Ilm al-Hadeeth by 
    Dr. Ghiyaath al-Ahmad, and al-Nawm ‘ala al-Jihah al-Yumna by Dr. 
    Ibraaheem al-Raawi.

     So children should be trained to sleep on their right sides, 
    following the example of the Prophet  (peace and blessings of Allaah be 
    upon him) and so as to benefit their bodies. 

    The scholars of the Standing Committee were asked: is it true 
    that it is bad to sleep on the stomach? I was told that sleeping on the 
    stomach is makrooh because that is how the shaytaan sleeps, but I have been 
    used to sleeping in this position since I was small, and I still do that now 
    because it is my habit. What is the ruling on that? 

    They replied: It is makrooh to sleep on the stomach, because 
    of the report narrated by Abu Dawood from Takhfah ibn Qays al-Ghifaari, who 
    said: When I was lying on my stomach in the mosque just before dawn, a man 
    nudged me with his foot and said: “This manner of lying is hated by Allaah.” 
    I looked and saw that it was the Messenger of Allaah  (peace and 
    blessings of Allaah be upon him). 

    Narrated by Abu Dawood in a chapter entitled: “A man who lies 
    on his stomach.” So that should be given up even if it is one’s habit, 
    because it is prescribed for the Muslim to give up habits that go against 
    sharee’ah. End quote. 

    Fataawa al-Lajnah al-Daa’imah 
    (26/146). 

    And Allaah knows best.