Al-Baqarah 2:182

Faman khafa min moosinjanafan aw ithman faaslaha baynahum falaithma AAalayhi inna Allaha ghafoorun raheem

But if one fears from the bequeather [some] error or sin and corrects that which is between them [i.e., the concerned parties], there is no sin upon him. Indeed, Allāh is Forgiving and Merciful.

But, whoever apprehends a mistake (unintentional) or a sin (intentional) from a testator, and puts things right between them, then there is no sin on him. Surely, Allah is Forgiving, Merciful.