It is narrated from Ibn Abbas (may Allah be pleased with them) that he stated: A marriage does not take place without a guardian, two trustworthy witnesses, and a guiding guardian, and in my opinion, Muslim heard this from Ibn Khuthaym.
Hadith Referenceمسند الإمام الشافعي / كتاب النكاح / 1134
Hadith Takhrijسنده قوی اخرجه البيهقى 126/7 - وفى المعرفة السنن والآثار له (4076)۔