What is the ruling on lying to the shop owner after opening a jar of jam, and is it obligatory to pay its price as charity?

Given the uncertainty regarding reaching puberty, the long passage of time, and the lack of knowledge about your country's customs concerning product returns and the effect of opening a bottle on its spoilage, the questioner transcends this issue, especially considering the low value of the bottle and the strong presumption of forgiveness regarding it. The fundamental principle is the acquittal of one's liability until proven otherwise with certainty. Al-'Izz ibn 'Abd al-Salam said: "The fundamental principle is the acquittal of his liability." Al-Juwayni said: "For anything whose obligation is unclear, the fundamental principle is the acquittal of liability concerning it."