Al-Baqara 2:231

When you divorce women and they have completed their waiting period, either retain them with fairness or release them with fairness. Do not retain them in order to harm them[124], exceeding the limits. Whoever does this, he has wronged himself. Do not make mockery of Allah’s verses, and remember Allah’s grace upon you and what He has sent down to you of the Book and the Wisdom, to exhort you. And fear Allah, and know that Allah is All-Knowing of everything.

[124] By prolonging an agonizing waiting period, holding them back from marrying other husbands or forcing them into seeking separation.

And when you divorce women and they have [nearly] fulfilled their term, either retain them according to acceptable terms or release them according to acceptable terms, and do not keep them, intending harm, to transgress [against them]. And whoever does that has certainly wronged himself. And do not take the verses of Allāh in jest. And remember the favor of Allāh upon you and what has been revealed to you of the Book [i.e., the Qur’ān] and wisdom [i.e., the Prophet's sunnah] by which He instructs you. And fear Allāh and know that Allāh is Knowing of all things.

231. And when you have divorced women and they have fulfilled the term of their prescribed period, either take them back on reasonable basis or set them free on reasonable basis. But do not take them back to hurt them, and whoever does that, then he has wronged himself. And treat not the Verses (Laws) of Allâh as a jest, but remember Allâh’s Favours on you (i.e. Islâm), and that which He has sent down to you of the Book (i.e. the Qur’ân) and Al-Hikmah (the Prophet’s Sunnah - legal ways - Islâmic jurisprudence.) whereby He instructs you. And fear Allâh, and know that Allâh is All-Aware of everything.

When ye have divorced women, and they have reached their term, then retain them in kindness or release them in kindness. Retain them not to their hurt so that ye transgress (the limits). He who doeth that hath wronged his soul. Make not the revelations of Allah a laughing-stock (by your behaviour), but remember Allah's grace upon you and that which He hath revealed unto you of the Scripture and of wisdom, whereby He doth exhort you. Observe your duty to Allah and know that Allah is Aware of all things.