Wedding day

The Prophet Muhammad (PBUH)

 قوْلُ اَلرَّجُلِ لِلْمَرْأَةِ : «إِنِّي أُحِبُّكِ» لاَ يَذْهَبُ مِنْ قَلْبِهَا أَبَداً

A man’s word telling his wife: «I love you» never will quit her heart

al-Kafi, v. 5, p. 569