Hadith 1190B2

قَالَ مَالِكٌ : وَإِنْ أَدْرَكَهَا زَوْجُهَا، قَبْلَ أَنْ تَتَزَوَّجَ فَهُوَ أَحَقُّ بِهَا۔
This is also the ruling according to us.
Imam Malik said that if the first husband returns during the woman's waiting period ('iddah), then he will have the right to his wife.
Hadith Reference موطا امام مالك رواية يحييٰ / كتاب الطلاق / 1190B2
Hadith Takhrij «فواد عبدالباقي نمبر: 29 - كِتَابُ الطَّلَاقِ-ح: 52ق»