Al-Kahf 18:73

Moses said, “Do not take me to task for what I forgot, and do not make it too difficult for me to follow you.”

[Moses] said, "Do not blame me for what I forgot and do not overwhelm me in my matter with difficulty."

73. [Mûsâ (Moses)] said: "Call me not to account for what I forgot,[6] and be not hard upon me for my affair (with you)."

[6] (V.18:73)
a) If someone does something against his oath due to forgetfulness (should he make expiation?). And the Statement of Allâh:
"And there is no sin on you, concerning that in which you made a mistake." (V.33:5)
And Allâh said:
"[Mûsâ (Moses) said to Khidr]: Call me not to account for what I forgot." (V.18:73)
Narrated Abu Hurairah رضي الله عنه: The Prophet صلى الله عليه وسلم said, "Allâh forgives my followers those (evil deeds) their ownselves may whisper or suggest to them as long as they do not act (on it) or speak." (Sahih Al-Bukhari, Vol. 8, Hadith No.657)
b) Narrated Abu Hurairah رضي الله عنه: The Prophetصلى الله عليه وسلم said, "If somebody eats something forgetfully while he is fasting, then he should complete his fast, for Allâh has made him eat and drink." (Sahih Al-Bukhari, Vol. 8, Hadith No.662).

(Moses) said: Be not wroth with me that I forgot, and be not hard upon me for my fault.