Explanation of the hadith
The Prophet (may Allah's peace and blessings be upon him) points out that a woman's marriage is not valid without a guardian who concludes the marriage contract.
عن أبي موسى رضي الله عنه أن النبي صلى الله عليه وسلم قال:
عن أبي موسى رضي الله عنه أن النبي صلى الله عليه وسلم قال: «لا نِكَاحَ إِلّا بِوَليٍّ».
Abu Mūsa al-Ash‘ari (may Allah be pleased with him) reported: The Prophet (may Allah's peace and blessings be upon him) said:
Abu Mūsa al-Ash‘ari (may Allah be pleased with him) reported: The Prophet (may Allah's peace and blessings be upon him) said: "There is no marriage except with a guardian."
The Prophet (may Allah's peace and blessings be upon him) points out that a woman's marriage is not valid without a guardian who concludes the marriage contract.