It was narrated from Ibrahim bin Abdur-Rahman bin Awf that his father said:
"I heard the Messenger of Allah (ﷺ) say: 'The hand of the pilferer is not to be cut off". (ID)
English reference (ID): Vol. 3, Book 20, Hadith 2592 (ID)
Arabic reference (ID): Book 20, Hadith 2690 (ID)