Al-Kāfi - The Book of Food

Chapter: Eating Pieces of Food that Fall on the Table-spread َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّرِ بْنِ خَلَّادٍ قَالَ سَ٠ِعْتُ أَبَا الْحَسَنِ ( عليه السلا٠ِنْهُ شَيْ‏ءٌ فَلْيَتَنَاوَلْهُ وَ ٠َنْ أَكَلَ فِي الصَّحْرَاءِ أَوْ خَارِجاً فَلْيَتْرُكْهُ لِلطَّيْرِ وَ السَّبُعِ. 8.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Mu’ammar ibn Khallad who has said the following: “I once heard abu al-Hassan (a.s.), saying, ‘If one eats food in his house and pieces of food fall off, he must pick them up and eat; but if one eats food in the wilderness or outdoors he should leave such pieces for the birds and beasts.”’ (See also Ch. 48, h 15) صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (2/118))