وَعَنِ ابْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا
قَالَ: «رَدَّ اَلنَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ اِبْنَتَهُ زَيْنَبَ عَلَى أَبِي الْعَاصِ بْنِ اَلرَّبِيعِ، بَعْدَ سِتِّ سِنِينَ بِالنِّكَاحِ اَلْأَوَّلِ، وَلَمْ يُحْدِثْ نِكَاحًا»
The Prophet (sallallahu alayhi wa sallam) returned his daughter Zainab (radiyallahu anha) to Abul-‘Aas bin ar-Rabi’ (radiyallahu anhu) based upon the first marriage, after six years (of separation), and he did not perform a new marriage.
Bulugh al-Maram 1171, Book 8, Marriage, Hadith 49. 1 min read