Saeed bin Musayyib (may Allah have mercy on him) narrated that the daughter of Muhammad bin Maslamah was married to Rafi’ bin Khadij (may Allah be pleased with him). Due to old age or some other reason, he began to dislike her, to the extent that he intended to divorce her. Then she said: "Do not divorce me; I forgo my rights." Upon this, the verse was revealed: "And if a woman fears from her husband contempt or evasion..." (__QUR_N__: An-Nisa: 128). He said: Then this practice became established.
Hadith Referenceمسند الإمام الشافعي / كتاب عشرة النساء والإيلاء والخلع / 1218