Women who are forbidden for marriage because of kinship

Please could you tell me the basic guideline on marriage in Islam with
regard to relatives? I know that it is permissible for a person to
marry paternal cousins, but what is the ruling on marrying
one'sfather's paternal cousin?And what is the ruling on my daughter
marrying the nephew of my mother-in-law? Please advise me, may Allah
reward you with good.
Praise be to Allaah.
Allah, may He be exalted,has mentioned women who are forbidden in
marriage because of kinship. Allah says (interpretation of the
meaning):
"Forbidden to you (for marriage) are: your mothers, your daughters,
your sisters, your father's sisters, your mother's sisters, your
brother's daughters, your sister's daughters…"
[al-Nisa' 4:23].
Shaykh Ibn 'Uthaymeen (may Allah have mercy on him) said:
These are seven who areforbidden in marriage, according to the text
and scholarly consensus; none of the scholars differed concerning
this.End quote from al-Sharh al-Mumti', 12/53.
They are:
1. The mother, which includes grandmothers on both the father's
and mother's side
2. The daughter, which includes granddaughters
3. Sisters, whether fullsisters or half-sisters through the
father or mother
4. The paternal aunt, which also includes the paternal aunt of
the father or mother
5. The maternal aunt, which also includes the maternal aunt of
the father or mother
6. The brother's daughter, which includes his granddaughters
7. The sister's daughter, which includes her granddaughters
Any other women who are relatives, apart from these, are permissible
for marriage. Hence Allah, may He be exalted,says in the following
verse (interpretation of the meaning): "All othersare lawful…"
[al-Nisa' 4:24].
Based on that, the daughter of one's paternal uncle or aunt, or of
one's maternal uncle or aunt, are permissible in marriage. The Qur'aan
states that in the verse (interpretation of the meaning):
"O Prophet (Muhammad SAW)! Verily, We have made lawful to you your
wives, to whom you have paid their Mahr (bridal money given by the
husband to his wife at the time of marriage),and those (slaves)
whomyour right hand possesses - whom Allâh has given to you, and the
daughters of your 'Amm (paternal uncles) and the daughters of your
'Ammaat (paternal aunts) and the daughters of your Khaal (maternal
uncles) and the daughters of your Khaalaat (maternal aunts)…"
[al-Ahzaab 33:50].
Based on this, it is permissible for a girl to marry her father's
paternal cousin, becausea person's paternal uncleis an uncle to him
and toall his offspring. So her father's paternal uncle isalso an
uncle to her, and his son is her cousin, andit is permissible for a
girlto marry her paternal cousin.
And it is permissible for your daughter to marry the son of your
mother-in-law's brother, because the brother of your mother-in-law is
her maternal uncle, because he is the maternal uncle of her father,
and the maternal uncle of one's father is also an uncle to his
children. And it is permissible for a girl to marry her maternal
cousin.
And Allah knows best.