عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ هَارُونَ بْنِ مُسْلِمٍ عَنْ مَسْعَدَةَ بْنِ صَدَقَةَ قَالَ سَمِعْتُ أَبَا عَبْدِ اللَّهِ ( عليه السلام ) يَقُولُ كُلْ مِنَ الْبَيْضِ مَا لَمْ يَسْتَوِ رَأْسَاهُ وَ قَالَ مَا كَانَ مِنْ بَيْضِ طَيْرِ الْمَاءِ مِثْلَ بَيْضِ الدَّجَاجِ وَ عَلَى خِلْقَتِهِ أَحَدُ رَأْسَيْهِ مُفَرْطَحٌ وَ إِلَّا فَلَا تَأْكُلْ .
4. Ali ibn Ibrahim has narrated from Harun ibn Muslim from Mas’adah ibn Sadaqah who has said the following: “I once heard abu ‘Abd Allah , saying, ‘If both ends of an egg are not of the same shape you then can use it for food.’ He (the Imam) said, ‘If it is of the eggs of the birds of water like the eggs of chicken with one end wider, otherwise, do not use it for food.’” 