Musannaf Ibn Abi Shaybah

Hazrat Abdullah (may Allah be pleased with him) narrates that if a man gives his wife the right of choice and she remains silent, then her silence is a sign of her consent to remain with her husband.

Ibrahim (may Allah have mercy on him) said that if a man gives his wife the choice (regarding separation), and she remains silent, then her silence is a sign of her consent to remain with her husband.