Sayyidah Aisha Siddiqa (may Allah be pleased with her) narrates: The Prophet Muhammad (peace and blessings be upon him) said: There is no marriage without a guardian and two just witnesses; any marriage other than this will be considered invalid. And if there is a dispute among people regarding (the matter of a guardian), then whoever has no guardian, the ruler of the time is his guardian. (Imam Ibn Hibban, may Allah have mercy on him, says:) In the narration transmitted from Zuhri through Sulaiman bin Musa from Ibn Jurayj, the words "without two just witnesses" have only been narrated by three individuals: Saeed bin Yahya Umavi narrated it from Hafs bin Ghiyath; Abdullah bin Abdulwahab Hajbi narrated it from Khalid bin Harith; and Abdur Rahman bin Yunus Ruqi narrated it from Isa bin Yunus. The mention of two witnesses has not been authentically transmitted anywhere else in this narration.