If the mother inherits from her deceased daughter, then the mother dies, does what she inherited from her daughter go back to the children of that daughter?
Question

                If maternal grandmother gets her share from her daughter،s property after her daughter،s death. would this share would be back to her daughter،s sons after her death(maternal grandmother) as her grand sons(deceased daughter،s sons are orphaned from mother side.
Praise be to Allah.
      If the mother inherited from her deceased daughter, then 
      the mother dies, her share of her daughter’s estate does not go back to 
      the children of this daughter and they do not inherit from her; rather it 
      is inherited by her (the mother’s) legitimate heirs who inherit from her 
      by means of their allocated share (fard) or by being residuary heirs (‘asaabah). 
      As for her daughter’s children, they do not inherit from her because they 
      are dhawu’l-arhaam (distant relatives through the female), and 
      dhawu’l-arhaam do not inherit except in the case when there are no heirs 
      with allocated shares or residuary heirs.  

    Ibn Qudaamah (may Allah have mercy on him) said: If the 
    deceased leaves behind residuary heirs or heirs who are entitled to an 
    allocated share, they take all the wealth and there is nothing for 
    dhawu’l-arhaam. This is the view of most of those who say that 
    dhawu’l-arhaam may inherit. End quote. al-Mughni, 6/209 

    The questioner says “they are the most entitled of people to 
    their mother’s wealth.” But it should be noted that the wealth is not 
    regarded as belonging to their mother any more, because when a person dies 
    his wealth or property is transferred to his heirs and Allah, may He be 
    exalted, has given each person his right. 

    He also says “because they are orphans from their mother's 
    side”. This is also subject to further discussion, because the yateem 
    or orphan (in shar‘i terminology) is the one whose father has died and is 
    below the age of puberty. Ibn al-Sikkeet said: The orphan is the one whose 
    father has died; the one who has lost his mother is not called an orphan. 
    End quote. 

    See: al-Mawsoo‘ah al-Fiqhiyyah, 45/254 

    And Allah knows best.