How sound are the prophetic hadiths: "Travel abroad and do not be ضوو" and "Do not travel abroad for marriage"?

We have previously clarified the weakness of the hadith: "Marry strangers and do not marry close relatives." As for the phrase: "Do not marry close kin," we do not know of it being a hadith. Al-Rafi'i mentioned a hadith with this wording, but Ibn al-Salah, Ibn Hajar, Ibn al-Mulaqqin, al-Iraqi, and al-Albani found no reliable origin for it. Many jurists cited this hadith to argue for the desirability of the wife not being very closely related. However, al-Subki believes that this ruling should not be established due to lack of evidence, and he gave the example of the Prophet's (peace be upon him) marriage of Ali to Fatimah, who were close relatives.