The Prohibition - 66:10
"Allah gives the example of Noah´s wife and Lot´s wife to the disbelievers. They were under the marriage of two righteous servants, but they betrayed them. Their husbands could not ward off anything from Allah. They were both told, "Enter Hell with those who enter it."
There is no advantage in being a relative of the Prophet:
The Repentance/9:113
Neither the Messenger nor the believers, even if they are relatives, can ask forgiveness for those who associate partners after it has become clear to them that they are the people of Hell.
The Repentance/9:114
The only reason Abraham asked forgiveness for his father was because he had promised it to him beforehand. When it became clear to him that he was an enemy of Allah, he turned away from him. Ibrahim was very sensitive and very compassionate.
The Prohibition/66:10
"Allah gives the example of Noah´s wife and Lot´s wife to the disbelievers. They were under the marriage of two righteous servants, but they betrayed them. Their husbands could not ward off anything from Allah. They were both told, "Enter Hell with those who enter it."
Prophet Hud/11:45
"Noah called out to his Lord: "O my Lord, my son is of my family, and Your promise is true, and You are the best of judges."
Prophet Hud/11:46
"He said: "O Noah, he cannot be of your family. It is not virtuous for you to ask me for what you do not know. I advise you not to be among the ignorant."
Prophet Hud/11:47
"He said: "My Lord, I seek refuge in You for supplicating to You about a matter of which I have no knowledge. If You do not forgive me and have mercy on me, I shall be of the losers."
Those Who Set The Ranks/37:113
We favored him and Isaac. Verily, from the descendants of both of them are those who do good and those who wrong.
The Cow/2:124
"His Lord once tested Abraham with some words, and he added to them: "I will make you a leader of mankind,"(God) said. And when he said, "And from my descendants?", He said, "The wrongdoers will not be included in My Word"."
The Heights/7:188
"Say: "I can neither benefit nor harm myself except what Allah wills. Had I known the secret, I would have increased my wealth and no evil would have touched me. I am but a bearer of glad tidings and a warner to a people who believe."
The Sandhills/46:9
"Say: "I am not a messenger of any kind, nor do I know what will happen to me or to you. I follow only what has been revealed to me. I am nothing but a clear warner."
The Heights/7:6
We will question those to whom a message was sent, and We will question the messengers.
The Woman Who Is Examined/60:4
"There is a good example for you in Abraham and those who were with him. Those who were with him said to their people, "We are far from you and those whom you serve besides Allah. We do not know you. There is eternal enmity and hatred between us and you until you believe in Allah ALONE. Except that Abraham´s words to his father, "I will pray for your forgiveness, but I cannot protect you against anything from Allah"(as a mistake). "Our Lord, to You we trust, to You we turn, and to You we shall return."