What is disliked for a man to claim affiliation with when it is not so

Sayyiduna Sa'd and Sayyiduna Abu Bakrah (may Allah be pleased with them both) both said that their ears heard, and their hearts preserved, that Muhammad (peace and blessings be upon him) said: "Whoever attributes himself to someone other than his father, while he knows that he is not his father, Paradise is forbidden to him."

Mujahid said that Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) narrated as a marfu' hadith: "Whoever attributes himself to someone other than his father will never smell the fragrance of Paradise." When Nu'aym bin Abi Umayyah saw this matter, while Sayyiduna Mu'awiyah (may Allah be pleased with him) had intended to attribute him to someone other than his father, he said to Sayyiduna Mu'awiyah: "I am only an arrow from your quiver; shoot me wherever you wish."

Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Whoever attaches himself to anyone other than his masters, upon him is the curse of Allah, of the angels and of all people."

Sayyiduna Amr bin Kharijah (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) addressed the people while he (peace and blessings be upon him) was on his mount. The animal was chewing the cud and its saliva was flowing between my shoulders. He (peace and blessings be upon him) said: "Whoever attributes himself to someone other than his father, or whoever attaches himself to anyone other than his masters, upon him is the curse of Allah, and no obligatory worship and no voluntary worship will be accepted from him," or he said: "no voluntary worship and no obligatory worship."

Sayyiduna Sa'id bin Zayd (may Allah be pleased with him) said: I bear witness concerning the Messenger of Allah (peace and blessings be upon him) that I heard him (peace and blessings be upon him) saying: "Whoever takes someone as his master without the permission of his master, upon him is the curse of Allah."

Abu Ma'mar said that Sayyiduna Abu Bakr (may Allah be pleased with him) said: "Whoever claims a lineage that is not known, and disowns a lineage even if it is a remote one, has disbelieved in Allah."

Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) said: I heard the Messenger of Allah (peace and blessings be upon him) saying: "Whoever attributes himself to someone other than his father, or whoever attributes himself to anyone other than his masters, upon him is the continuous curse of Allah until the Day of Resurrection."

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said that the Prophet (peace and blessings be upon him) said: "Whoever attributes himself to someone other than his father, or whoever attaches himself to anyone other than his masters, upon him is the curse of Allah, of the angels and of all people."