The Sufficient (Vol 5) · Hadith 1636 (#Ḥadīth #2)
Chapter 84 | Marriage with Two Sisters at the Same Time: Free or Slave-girls
2- أَبُو عَلِيٍّ الأشْعَرِيُّ عَنْ مُحَمَّدِ بْنِ عَبْدِ الْجَبَّارِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنِ ابْنِ مُسْكَانَ عَنْ أَبِي بَكْرٍ الْحَضْرَمِيِّ قَالَ قُلْتُ لأبِي جَعْفَرٍ رَجُلٌ نَكَحَ امْرَأَةً ثُمَّ أَتَى أَرْضاً فَنَكَحَ أُخْتَهَا وَهُوَ لا يَعْلَمُ قَالَ يُمْسِكُ أَيَّتَهُمَا شَاءَ وَيُخَلِّي سَبِيلَ الأخْرَى.
2. Abu Ali al-Ash’ariy has narrated from Muhammad ibn ‘Abd al-Jabbar from Safwan ibn Yahya from ibn Muskan from abu Bakr al- Hadramiy who has said the following: “I once asked abu Ja’far , about the case of a man who marries a woman and then comes to a land where he marries her sister but he does not know. He (the Imam) said, ’He can keep whichever he wants and allow the other one to go.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).