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Mas’ala 1893المهذبShafi'ivol. 4, p. 300vol. 4, p. 300

فَإِنْ وَجَدَ فِي الصَّفِّ الْأَوَّلِ فُرْجَةً اُسْتُحِبَّ أَنْ يَسُدَّهَا لِمَا رَوَى أَنَسٌ رَضِيَ اللَّهُ عَنْهُ قَالَ " قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ " أَتِمُّوا الصَّفَّ الْأَوَّلَ

Its commentaries

المجموع شرح المهذبal-Nawawi

its words on this mas’ala come with mas’ala 1891 before it

A number in a circle: a mas’ala the commentary adds, numbered through it. In bold: the text’s own words inside the commentary.