- When is it forbidden to say the word "if," and is regretting the past forbidden? What is the ruling on one who said it out of ignorance or forgetfulness? - What is the ruling on using "Insha'Allah" (God willing) to indicate uncertainty or in jest? Is one who said it out of ignorance or forgetfulness sinful? - Is cursing illness an act of disbelief (kufr)? What is the ruling on one who cursed it out of ignorance?

If it is used for wishing, like layta, it is permissible to use both for wishing good, but forbidden for wishing evil. Law may also be used for purposes other than wishing, in which case its use is forbidden when objecting to religious law or divine decree, or when using divine decree as an excuse for sin. It is permissible to use it in mere statements of fact and when regretting missed acts of obedience. It is also permissible to suspend Allah's will on a future action by saying "Insha'Allah" (if Allah wills), seeking blessing and complying with Allah's command, provided the speaker intends to fulfill it, and it should not be said in jest or mockery. Cursing illness is disliked.