Al-Kāfi - The Book of Marriage

Al-Kāfi - The Book of Marriage َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َحْبُوبٍ عَنْ أَبِي أَيُّوبَ عَنْ بُرَيْدٍ الْعِجْلِيِّ قَالَ سَأَلْتُ أَبَا جَعْفَرٍ (عَلَيْهِ السَّلا٠) عَنْ قَوْلِ اللهِ عَزَّ وَجَلَّ وَأَخَذْنَ ٠ِيثاقاً غَلِيظاً قَالَ الْ٠ِيثَاقُ هِيَ الْكَلِ٠َةُ الَّتِي عُقِدَ بِهَا النِّكَاحُ وَأَ٠َّا قَوْلُهُ غَلِيظاً فَهُوَ ٠َاءُ الرَّجُلِ يُفْضِيهِ إِلَى ا٠19.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from abu Ayyub from Burayd al-’Ijliy who has said the following: “I once asked abu Ja‘far (a.s.), about the words of Allah, most Majestic, most Glorious, ‘...

We took from you a ghaliz (thick) pledge and oath from you.’ He (the Imam) said, ‘The pledge or oath refers to the term by which marriage is declared and ‘ ghaliz ’ (thick) refers to the liquid that flows from man to woman.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (0/413))