The Sufficient (Vol 7) · Hadith 565 (#Ḥadīth #3)
Chapter 5 | The Case of a Man who Forgets his Bearing Testimony but Recognizes his Handwriting
3- أَحْمَدُ بْنُ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ حَسَّانَ عَنْ إِدْرِيسَ بْنِ الْحَسَنِ عَنْ عَلِيِّ بْنِ غِيَاثٍ عَنْ أَبِي عَبْدِ اللهِ قَالَ لا تَشْهَدَنَّ بِشَهَادَةٍ حَتَّى تَعْرِفَهَا كَمَا تَعْرِفُ كَفَّكَ.
3. Ahmad ibn Muhammad has narrated from Muhammad ibn Hassan from Idris ibn al-Hassan from Ali ibn Ghiyath who has narrated the following: “Abu ‘Abd Allah , has said, ‘Do not testify for a case unless you know it as you know your palm.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).