What is the ruling concerning the act of 'Tarrar' (secret theft from a pocket or sleeve)?

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The ruling is that the thief who commits 'Tarrar' (secretly stealing from a man's pocket or sleeve) is subject to 'Qat' (amputation of the hand). This applies whether the stolen item remains inside the pocket or sleeve, or if the thief cuts the pocket/sleeve to take the item, or if the thief puts their hand into the pocket and takes what is inside. Ahmad is associated with this view.