Halala divorce and remarry
In the name of Allah, We praise Him, seek His help and ask for His forgiveness. Whoever Allah guides none can misguide, and whoever He allows to fall astray, none can guide them aright. We bear witness that there is none worthy of worship but Allah Alone, and we bear witness that Muhammad (saws) is His slave-servant and the seal of His Messengers.
The term 'Halala' is when a man who has irrevocably divorced his wife, and they (or some people) intentionally plan and arrange for another person to temporarily marry the (divorced) wife, so that the wife can become legal again for the first husband. This intentional plotting and planning for arranging the temporary marriage of the divorced wife with another person to intentionally circumvent the Laws of Allah and make her legal for her first husband is what is known as 'Halala'.
It is absolutely impermissible and a grave sin in the sight of Allah for the believers to plan such a 'halala' to intentionally circumvent and make a mockery of the Laws of Allah Subhanah.The Messenger of Allah (saws) invoked the Curse of Allah on the people who practiced 'halala' and on those for whom it was practiced.
Sunan of Abu-Dawood Hadith 2071 Narrated by Ali ibn AbuTalib
The Prophet (saws) said: 'The Curse of Allah be upon the one who marries a divorced woman with the intention of making her lawful for her former husband, and upon the one for whom she is made lawful!'
Under any and all circumstances, the process of what is known as 'halala' is not even an option for one who sincerely fears Allah and the Last Day.