Sunan Ibn Majah Book 15, Hadith 9
I heard Abu Umamah say:
“I heard the Messenger of Allah (ﷺ) say: 'Borrowed items are to be returned and an animal borrowed for milking is to be returned.”
“Umar bin Khattab said: 'O Messenger of Allah (ﷺ), the one hundred shares of the Khaibar I have never been given any wealth that is more beloved to me than them, and I wanted to give them in charity.' The Prophet (ﷺ) said: 'Make it an endowment and give its produce in the cause of Allah (SWT).”
“I heard the Messenger of Allah (ﷺ) say: 'Borrowed items are to be returned and an animal borrowed for milking is to be returned.' ”