ANSWER:

There isn’t anything specific in the sunnah about this but the ayah in surah Al Kahf indicates that one should remember Allah if he forgets but this is not related to forgetfulness but rather if one did not say in sha Allah to what he wanted to do tomorrow for example, and remembering Allah would be by saying in sha Allah.

QUESTION: Is it authentic that when you forget something you should remember Allah (saying SubhanAllah, la ilaha illallah). Jazakallahu khairan and I love you for the sake of Allah.