What is the proper procedure of Islamic divorce?
Adil Salahi explains.

If a man wants to divorce his wife, he should make sure of the appropriate time, which is after she has finished her menstruation period and before having any sexual intercourse with her. If she is in the period or in a state of of cleanliness during which an intercourse has taken place, he should wait until the appropriate time. Then he pronounces divorce, such as saying, “I am divorcing my wife --”. He says this once only. If he says it three times, he commits a sin. He informs his wife of the fact so that she starts her waiting period, which extends until she has completed either three menstruation periods or three cleanliness periods. During this time, she stays with him in their family home, they use separate bedrooms. He is responsible for her upkeep, and he has the advantage of reinstating the marriage if they both agree, without having to have a new marriage contract (Nikah). If the waiting period lapses and no reunion takes place, the divorce procedure is complete and she re-joins her family. After the waiting period is over, they may still be reunited in marriage, but this will require a new contract and a new dowry, provided that this is their first or second divorce