What is the ruling on two sisters exchanging hidden items after a quarrel, and must a sister's key be returned after finding a mobile phone without her returning it, and what is the ruling on pointing to the location of the key without handing it over?

If the one swearing an oath intended to prevent his wife from accessing the key until he obtained his phone, then he does not break his oath if he gives her the key or directs her to it after obtaining his phone, even if he did not obtain it through her. This is because, in an oath, reference is made to the intention of the one swearing it.