It is narrated from Sayyiduna al-Sa'ib bin Yazid (may Allah be pleased with him) that he heard the Prophet (peace and blessings be upon him) say: "None of you should take his companion's belongings, whether in jest or in earnest; and if one of you takes his companion's staff, let him return it to him."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 6611