Sayyiduna Jabir (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: When any of you finishes eating food, he should not wipe his hands with a cloth until he has licked them or had them licked, because he does not know in which part of the food the blessing lies. In another narration, the words are: He should not clean his hands until he has sucked them, because he does not know in which part of the food blessing has been placed for him.