Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him) that he said: "There is no marriage except with a guardian, a proposer, and two upright witnesses."
Al-Bukhari said: Mughirah bin Musa al-Basri is munkar al-hadith (his narrations are rejected). Abu Ahmad (Ibn Adi) said: Al-Mughirah bin Musa is, in himself, thiqah (trustworthy).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13722