Does a Misyar marriage divorce require documentation with a legal deed, or is a verbal triple divorce sufficient?

Misyar marriage is permissible if it fulfills the conditions of a valid contract. The manner of divorce in it does not differ from other marriages; it takes effect merely by uttering it, and it is not required to be written. What is obligatory is that it conforms to the Sunnah (definition), meaning it should be a single divorce during a period of purity in which no intercourse occurred, and then she should be left until her waiting period (iddah (definition)) expires. Uttering three divorces in one declaration is an innovated (bid'i) and forbidden act, and it counts as three divorces according to the majority of scholars, but as one according to Ibn Taymiyyah. Initiating divorce is disliked except for a legitimate Sharia (definition) reason. However, if the conditions for the validity of Misyar marriage are not met, such as it being without a guardian (wali), or without witnesses, or for a fixed term, then it is void and must be annulled.