The Messenger of Allah ﷺ said: It is not lawful for a man to separate two persons except with their permission. (Using translation from Abū Dāʾūd 4845)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَا يَحِلُّ لِرَجُلٍ أَنْ يُفَرِّقَ بَيْنَ اثْنَيْنِ إِلَّا بِإِذْنِهِمَا