The women who inherit: how many are they?

Fudayl bin Amr said that Ibrahim said: Six women inherit: the daughter, the son's daughter, the mother, the grandmother, the sister and the wife. And they inherit from seven men: the father, the son, the son's son, the brother, the husband and the grandfather; and she inherits a sixth from her daughter's son, unless he has a residuary heir ('asabah) other than her.

Al-A'mash reports that Ibrahim said: The women who inherit from a man are six: the daughter, the son's daughter, the mother, the grandmother, the sister and the wife. And a woman inherits from seven men: the son, the son's son, the father, the grandfather, the husband and the brother; and she inherits a sixth from her daughter's son, while he does not inherit anything from her, according to the statement of all of them.

Nu'man bin Salim said: I asked Sayyiduna Ibn Umar (may Allah be pleased with them both) about a daughter's son: "What do you say about a man who leaves behind his sister's son? Will he be his heir?" He said: "No."