It is narrated from Wahb bin Uqbah (who was born in the time of Uthman, may Allah be pleased with him) that a woman gave testimony regarding breastfeeding, saying: I breastfed a man and his wife. So Sayyiduna Uthman bin Affan, may Allah be pleased with him, said: "She should swear an oath by the Ka'bah." But when she was pressed hard, she retracted.