The command to announce marriage

It is narrated from Sayyiduna Nadrah bin Aktham (may Allah be pleased with him) that he married a virgin woman and consummated the marriage with her, and found her pregnant. So the Prophet (peace and blessings be upon him) declared her child his slave and separated the husband and wife.

It is narrated from Amir bin Abdullah bin al-Zubayr, from his father Sayyiduna Abdullah bin al-Zubayr (may Allah be pleased with them both), that the Messenger of Allah (peace and blessings be upon him) said: "Announce marriage publicly."
This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyidah Aishah (may Allah be pleased with her) that she said: We escorted a woman of the Ansar to her husband, and the Messenger of Allah (peace and blessings be upon him) asked: "Was there any entertainment (means of celebration) with you? For the Ansar love entertainment."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Abu Balj Yahya bin Sulaym that he said: I said to Muhammad bin Hatib: "I have (on one occasion) held two weddings, and at neither of them was there any sound (that is, the sound of the daff being played)." Muhammad bin Hatib said that the Messenger of Allah (peace and blessings be upon him) said: "The distinction between the lawful (marriage) and the unlawful (fornication) is the sound of the daff."
This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Amir bin Sa'd that he said: I was with Thabit bin Wadi'ah and Qarazah bin Ka'b at a wedding, and I heard the sound (of singing), so I said: "Do you not hear (what is going on)?!" They replied: "Indeed, we have been granted a concession for singing at weddings, and for weeping over the deceased without wailing."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Amir bin Sa'd that he said: I went in to Qarazah bin Ka'b and Abu Mas'ud al-Ansari (may Allah be pleased with them both) at a wedding celebration, and there were girls singing. I said: "You are distinguished Companions of the Messenger of Allah (peace and blessings be upon him) and people of Badr; is this being done in front of you?!" They said: "If you wish, sit with us; otherwise, go. We have been given permission for entertainment (expressing joy) at weddings and for weeping at a calamity." The narrator says: I think he said: "without wailing."

It is narrated from Sayyidah Aishah (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) heard some people singing at a wedding celebration: "He gave her rams as a gift, / resting at ease in the pen, / and your beloved is in the gathering, / and he knows what will happen tomorrow." So the Prophet (peace and blessings be upon him) said (correcting them): "No one knows what will happen tomorrow except Allah."
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyidah Umm Hani' bint Abi Talib (may Allah be pleased with her) that she said: The Messenger of Allah (peace and blessings be upon him) proposed marriage to me, and I excused myself to him (peace and blessings be upon him), and he (peace and blessings be upon him) accepted my excuse. Then this verse was revealed to him (peace and blessings be upon him): "Indeed, We have made lawful for you your wives (to whom you have given their dowries)" [Surah al-Ahzab: 50]. Umm Hani' said: "(According to this verse) I was not lawful for him (peace and blessings be upon him), because I had not emigrated with him (peace and blessings be upon him), and I was among those who had been set free (at the conquest of Makkah)."
This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.