Jami' al-Saghir / Jam' al-Jawami' (al-Suyuti) 4-1231b
"مالِك أَنَّهُ بَلَغَهُ: أَنَّ عَلِىَّ بْنَ أَبِى طَالِب وَعَبْدَ الله بْنَ عَبَّاسٍ قَالاَ: الصَّلاَةُ الوُسْطَى صَلاَةُ الصُّبْح".
Notes
[ق] البيهقى في السنن
machine translation[Q] Al-Bayhaqī in al-Sunan
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