بَعْضُ أَصْحَابِنَا عَنِ ابْنِ جُمْهُورٍ عَنْ مُحَمَّدِ بْنِ الْقَاسِمِ عَنْ عَبْدِ اللَّهِ بْنِ أَبِي يَعْفُورٍ قَالَ قُلْتُ لِأَبِي عَبْدِ اللَّهِ ( عليه السلام ) إِنِّي أَكُونُ فِي الْآجَامِ فَيَخْتَلِفُ عَلَيَّ الطَّيْرُ فَمَا آكُلُ مِنْهُ فَقَالَ كُلْ مَا دَفَّ وَ لَا تَأْكُلْ مَا صَفَّ فَقُلْتُ إِنِّي أُوتَى بِهِ مَذْبُوحاً فَقَالَ كُلْ مَا كَانَتْ لَهُ قَانِصَةٌ .
6. Certain persons of our people have narrated from ibn Jumhur from Muhammad ibn al-Qasim from ‘Abd Allah ibn abu Ya‘fur who has said the following: “I once asked abu ‘Abd Allah, Alayhi al-Salam, about birds that I find in wilderness and about which is edible. He (the Imam) said, ‘All birds that flap their wings in flight are edible and all birds that keep their wings straight in flight are not edible.’ ‘What happens if they are brought to me already slaughtered?’ He (the Imam) said, ’Eat whatever has craws.’” 