[16]. Whenever a person realizes that he forgot to say In shā’ Allāh — “if Allāh wills” — regarding a future intention, he should say it as soon as he remembers. And whenever one forgets something, let him remember Allāh and say: “Lā ilāha illallāh” — there is no deity worthy of worship but Allāh alone. For through the remembrance of Allāh, the heart regains clarity, and what was forgotten is often recalled.