"The Messenger of Allah was asked about a man who divorced his wife, and she married another man who had a closed meeting with her then divorced her, before having intercourse with her. Is it permissible for her to remarry the first husband? The Messenger of Allah said: 'No, not until the second one tastes her sweetness and she tastes his sweetness.'" (Using translation from Nasāʾī 3407)
سُئِلَ رَسُولُ اللهِ ﷺ عَنْ رَجُلٍ طَلَّقَ امْرَأَتَهُ فَتَزَوَّجَتْ زَوْجًا غَيْرَهُ فَدَخَلَ بِهَا ثُمَّ طَلَّقَهَا قَبْلَ أَنْ يُوَاقِعَهَا أَتَحِلُّ لِلْأَوَّلِ؟ فَقَالَ رَسُولُ اللهِ ﷺ «لَا حَتَّى يَذُوقَ الْآخَرُ عُسَيْلَتَهَا وَتَذُوقَ عُسَيْلَتَهُ»