The Sufficient (Vol 6) · Hadith 1210 (#Ḥadīth #6)
Chapter 58 | The Meat of Cows and their Fat
عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ أَبِي عَبْدِ اللَّهِ عَنْ بَعْضِ أَصْحَابِهِ بَلَغَ بِهِ زُرَارَةَ قَالَ قُلْتُ لِأَبِي عَبْدِ اللَّهِ ( عليه السلام ) جُعِلْتُ فِدَاكَ الشَّحْمَةُ الَّتِي تُخْرِجُ مِثْلَهَا مِنَ الدَّاءِ أَيُّ شَحْمَةٍ هِيَ قَالَ هِيَ شَحْمَةُ الْبَقَرِ وَ مَا سَأَلَنِي يَا زُرَارَةُ عَنْهَا أَحَدٌ قَبْلَكَ .
6. A number of our people have narrated from Ahmad ibn ‘Abd Allah from certain persons of his people (and) brought by Zurarah who has said the following: “I once said to abu ‘Abd Allah , ‘I pray to Allah to keep my soul in service for your cause, ‘Al-Shahmah (the fat) that expels the same amount of illness, which shahmah is it?’ He (the Imam) said, ‘It is shahmah of al-Baqar (cow) and no one before you has asked me about it.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).