Yahya bin Abi Ishaq يحيى بن أبي إسحاق · The Book of Divorce

"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.'"