Sayyidina Ma’qil ibn Yasar (RA) reported that during the Prophet’s (SAW) times, he married his sister to a Muslim man. She remained with him as long as she was before he divorced her, one divorce. But he did not revoke it till the iddah was over. Then he longed for her and she for him, so he sent message for marriage. Ma’qil retorted, “O vile man! I had honoured you by marrying her to you, but you divorced her. By Allah, she will not return to you ever again.” But, Allah knew his need for her and her need for her spouse. So, Allah the Blessed and Exalted, revealed:
“When ye divorce women, and they fulfil the term of their ('Iddat), do not prevent them from marrying their (former) husbands, if they mutually agree on equitable terms. This instruction is for all amongst you, who believe in Allah and the Last Day. That is (the course Making for) most virtue and purity amongst you and Allah knows, and ye know not.” (2 : 232)
On hearing this, Ma’qil (RA) remarked, “I hear and I obey.” He called the man and said, “I marry her to you and honour you.”
[Bukhari 5429,Abu Dawud 2081]