Al-Kāfi
Hadith 947مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ يَحْيَى عَنْ غِيَاثِ بْنِ إِبْرَاهِيمَ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) فِي بَيْضَةٍ خَرَجَتْ مِنِ اسْتِ دَجَاجَةٍ مَيْتَةٍ فَقَالَ إِنْ كَانَتِ الْبَيْضَةُ اكْتَسَتِ الْجِلْدَ الْغَلِيظَ فَلَا بَأْسَ بِهَا .
5. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn Yahya from Ghiyath ibn Ibrahim who has said the following: “About the case of an egg which comes out of the bottom of a dead chicken, abu ‘Abd Allah (a.s.), has said, ‘If the egg is covered with its thick crust , then it is not unlawful.’”