Ja'far bin Muhammad (Imam Ja'far al-Sadiq) narrates from his father (Imam Muhammad al-Baqir) (may Allah have mercy on them both) that the Prophet (peace and blessings be upon him) gave judgement in favour of the claimant on the basis of one witness together with (the claimant's) oath.
(Ja'far's father) Muhammad bin Ali (may Allah have mercy on him) said: "And I bear witness that Sayyiduna Ali (may Allah be pleased with him) gave this same judgement among you." Abd al-Aziz (the narrator) states: Muhammad bin Ali (Imam al-Baqir) was saying this to al-Hakam bin Utaybah (al-Hakam bin Utaybah of Kufah).
The second chain (the chain of Musaddad):
It is narrated from Ja'far bin Muhammad that he said: I heard my father saying this same thing to al-Hakam bin Utaybah (and he mentioned the same content).
(The author Ibn Hajar (may Allah have mercy on him) says: Imam al-Tirmidhi (may Allah have mercy on him) narrated it through Muhammad bin Ali from Jabir, and pointed to the hadith of Sayyiduna Ali (may Allah be pleased with him).)
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب القضاء والشهادات / 2191
Hadith Gradingمحدثین:إسناده صحيح، مرسل
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :مرسل، إسناده صحيح. » «أخرجه سنن الترمذي برقم: 1343، وأخرجه مسند أحمد برقم: 21954، وأخرجه المعجم الكبير للطبراني برقم: 5362، وأخرجه المعجم الأوسط للطبراني برقم: 1063، 7345، وأخرجه مسند الإمام الشافعي برقم: 1713، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 4939/2»