Seven are forbidden by lineage and seven by marriage

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that he said: Seven (relations) are forbidden because of lineage, and seven are also forbidden because of relationship by marriage (musaharah). Then he recited these verses: "Forbidden to you are your mothers, your daughters, your sisters, your paternal aunts, your maternal aunts, your brother's daughters and your sister's daughters"; these are forbidden because of lineage. (And he further recited:) "And your mothers who nursed you, your sisters through nursing, the mothers of your wives, and your stepdaughters under your guardianship born of your wives with whom you have consummated marriage; but if you have not consummated marriage with them, there is no sin upon you; and the wives of your sons who are from your own loins, and that you take two sisters together, except for what has already passed" [Surah Al-Nisa': 23], and (he said:) "And do not marry those women whom your fathers married" [Surah Al-Nisa': 22].
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it. It has an authentic supporting narration (shahid) from the narration of Ikrimah.

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) (through another chain) that he said: Seven (relations) are forbidden because of lineage, and seven because of relationship by marriage.

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) concerning this saying of Allah Almighty, "And (also forbidden to you are) married women, except those whom your right hands possess" [Surah Al-Nisa': 24], that he said: "(Relations with) any married woman is fornication, except for a woman who was taken captive in war."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it.

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that Abu Nadrah recited before him the verse, "So for whatever you have enjoyed of them, give them their due compensation" [Surah Al-Nisa': 24]. Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: "(In fact it is like this:) So for the women whom you have enjoyed for a specified term, give them their dowries." Abu Nadrah said: I said: We do not recite it that way! Ibn Abbas (may Allah be pleased with them both) said: "By Allah, Allah Almighty revealed it that way."
This hadith is sahih (authentic) on the condition of Muslim, and the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyidah Aishah (may Allah be pleased with her). (The narrator said:) She was asked about mut'ah (temporary marriage), and she said: "Between me and you is the Book of Allah (as judge)." Then she recited this verse: "And those who guard their private parts, except from their wives or those (slave women) their right hands possess, for then they are not to be blamed" [Surah Al-Mu'minun: 5-6]. (And she said:) "So whoever seeks beyond those (wife and slave woman) whom Allah has given him in marriage or made him own, it is he who transgresses."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he said: "In Surah al-Nisa' there are five verses such that having this world and everything in it in exchange for them would not make me as happy (as having these verses does): 'Indeed, Allah does not do injustice even the weight of an atom; and if it is a good deed, He multiplies it and gives from Himself a great reward' [Surah Al-Nisa': 40]; and 'If you avoid the major sins which you are forbidden, We will remove from you your lesser misdeeds and admit you to a noble entrance' [Surah Al-Nisa': 31]; and 'Indeed, Allah does not forgive that partners be associated with Him, but He forgives what is less than that for whom He wills' [Surah Al-Nisa': 48]; and 'And if, when they wronged themselves, they had come to you and asked forgiveness of Allah and the Messenger (peace and blessings be upon him) had asked forgiveness for them, they would have found Allah Accepting of repentance and Most Merciful' [Surah Al-Nisa': 64]." Sayyiduna Abdullah (may Allah be pleased with him) said (again): "Having this world and everything in it in exchange for these verses would not make me happy."
This chain is sahih (authentic) if Abd al-Rahman heard from his father, and there is a difference of opinion about that hearing.

It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she said: "O Messenger of Allah, the men take part in military campaigns, while we (women) neither go on campaigns nor fight in battle and attain martyrdom, and we also receive (only) half (of the men's share) in inheritance?" So Allah Almighty revealed this verse: "And do not wish for that by which Allah has favoured some of you over others" [Surah Al-Nisa': 32].
If it is established that Mujahid heard from Sayyidah Umm Salamah (may Allah be pleased with her), then this hadith has a sahih (authentic) chain on the condition of the two Shaykhs (Bukhari and Muslim).

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) concerning the saying of Allah Almighty, "And those with whom your right hands have made a pledge, give them their share" [Surah Al-Nisa': 33], that he said: "When the Muhajirun came to Madinah, on the basis of the brotherhood which the Messenger of Allah (peace and blessings be upon him) had established between them and the Ansar, the Muhajirun would inherit from the Ansar (upon death) instead of their close relatives. Then when this verse was revealed, 'And for each We have appointed heirs of what is left by parents and close relatives,' it abrogated the former arrangement; and (the saying of Allah Almighty) 'And those with whom your right hands have made a pledge, give them their share' now refers (not to inheritance but) to a share of help and sincere goodwill."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim).