Hanging up pictures of children inside the house
Question

                What is the ruling on hanging up pictures of children inside the house?.
Praise be to Allah.It is not permissible to 
    hang up pictures at all, whether of children or adults. That is because of 
    the stern prohibition narrated from the Prophet  (peace and blessings of 
    Allaah be upon him) against keeping pictures and his command to ‘Ali (may 
    Allaah be pleased with him): “Do not leave any image without erasing it or 
    any raised grave without leveling it.” Narrated by Muslim, 1/66 

    Hence pictures must be removed, erased or burned and not 
    kept. 

    Hanging up pictures of animate beings inside houses or 
    elsewhere deprives the people of that place of a great deal of good, which 
    is the angels’ entering that house. It was narrated from Abu Sa’eed 
    al-Khudri (may Allaah have mercy on him) that the Prophet  (peace and 
    blessings of Allaah be upon him) said: “The angels do not enter a house in 
    which there are statues or images.” Narrated by Imam Ahmad; Saheeh 
    al-Jaami’, 1961. 
It is permissible to hang 
    up pictures of inanimate things such as trees, mountains, seas and natural 
    views, or other inanimate drawings, without being extravagant.