DO NOT THROW FOOD AWAY H 612 "When the Prophet, praise and peace be upon him, finished eating his meal he would lick three fingers. He said, 'If food should fall from the hand of any of you he should remove the dirty portion and eat the rest, and not leave it for satan. You should wipe the plate you eat from, because you do not know which part of your food is blessed.'" R 612 Muslim with a chain up to Anas who related this hadith.
607- وعن أنس رضي الله عنه : أن رسول الله صلى الله عليه وآله وسلم كَانَ إِذَا أكَلَ طَعَاماً ، لَعِقَ أصَابِعَهُ الثَّلاَثَ . قَالَ : وقال : "إِذَا سَقَطَتْ لُقْمَةُ أَحَدِكُمْ فَلْيُمِط عنها الأَذى ، وليَأكُلْها وَلاَ يَدَعْها لِلشَّيْطان" وأمرَ أن تُسلَتَ القَصْعَةُ ، قَالَ : "فإنَّكُمْ لاَ تَدْرُونَ في أيِّ طَعَامِكُمُ البَرَكَة" رواه مسلم .