The Negus married Umm Habibah daughter of Abu Sufyan to the Messenger of Allah (ﷺ) for a dower of four thousand dirhams. He wrote it to the Messenger of Allah (ﷺ) who accepted it.
Sunan Abi Dawud Book 12, Hadith 63
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Sunan Abi Dawud Book 12, Hadith 62 Next Hadith → The Messenger of Allah (ﷺ) saw the trace of yellow on 'Abd al-Rahman b. 'Awf. The Prophet (ﷺ) said: What is this ? He replied: Messenger of Allah, I have married a woman. He asked: How much dower did you give her ? He said: A nawat weight of gold. He said: Hold a wedding feast, even if only with a sheep.

Sunan Abi Dawud Book 12, Hadith 64