Jami' al-Saghir / Jam' al-Jawami' (al-Suyuti) 4-1252b
" عَنْ عَلِىٍّ قَالَ: إِذَا حَكَمَ أحَدُ الحَكَمَيْن وَلَمْ يَحْكُمْ الآخَرُ فَلَيْسَ حُكْمُهُ بِشَىْء يَجْتَمِعَا".
Notes
[ق] البيهقى في السنن
machine translation[Q] Al-Bayhaqī in al-Sunan
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