At-Talaq 65:2

Fa-itha balaghna ajalahunnafaamsikoohunna bimaAAroofin aw fariqoohunna bimaAAroofinwaashhidoo thaway AAadlin minkum waaqeemoo ashshahadatalillahi thalikum yooAAathu bihi man kanayu/minu billahi walyawmi al-akhiriwaman yattaqi Allaha yajAAal lahu makhraja

And when they have [nearly] fulfilled their term, either retain them according to acceptable terms or part with them according to acceptable terms. And bring to witness two just men from among you and establish the testimony for [the acceptance of] Allāh. That is instructed to whoever should believe in Allāh and the Last Day. And whoever fears Allāh - He will make for him a way out

So, when they (the divorced women) have (almost) reached their term, then either retain them with fairness, or part with them with fairness. And make two just men from among you witnesses (of your either decision). And (O witnesses,) keep your testimony upright for the sake of Allah. That is what anyone who believes in Allah and the Last Day is exhorted to do. Whoever fears Allah, He brings forth a way out for him,