Mas’ala 754الأمShafi'ivol. 1, p. 97vol. 1, p. 97 الرَّجُلُ يُصَلِّي وَقَدْ فَاتَتْهُ قَبْلَهَا صَلَاةٌ Read the whole chapterCopy with source On the map: PrayerCompare