قَالَ أَبُو عَبْدِ اللَّهِ ع مَا كَانَ مِنْ شَرْطٍ قَبْلَ النِّكَاحِ هَدَمَهُ النِّكَاحُ وَ مَا كَانَ بَعْدَ النِّكَاحِ فَهُوَ جَائِزٌ وَ قَالَ إِنْ سُمِّيَ الْأَجَلُ فَهُوَ مُتْعَةٌ وَ إِنْ لَمْ يُسَمَّ الْأَجَلُ فَهُوَ نِكَاحٌ بَاتٌ[2].
“Any condition before marriage becomes invalid by marriage and the condition after marriage is permissible.’ He (the Imam) said, ’If time limit is mentioned it is al-Mut‘ah (advantageous marriage) and if time limit is not mentioned it is permanent.’”