Mas’ala 1997المهذبShafi'ivol. 4, p. 373vol. 4, p. 373 فَإِنْ فُصِلَ بَيْنَهُمَا بِفَصْلٍ طَوِيلٍ بَطَلَ الْجَمْعُ Read the whole chapterCopy with source On the map: PrayerCompare