Jami' al-Saghir / Jam' al-Jawami' (al-Suyuti) 4-861b
"عَنْ عَلِىٍّ قَالَ: مَنْ صَلَّى الْعَتَمَةَ - يَعْنىِ في الْجَمَاعَةِ - كُلَّ لَيْلَةٍ في شَهْرِ رَمَضَانَ حَتَّى يَنْسَلِخَ فَقَدْ قَامَهُ".
Notes
[هب] البيهقى في شعب الإيمان
machine translation[Hab] Al-Bayhaqī in Shuʿab al-Īmān
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