Mas’ala 5671الأمShafi'ivol. 2, p. 124vol. 2, p. 124 وَعِلَّتُهُ فِي الْفَرْقِ بَيْنَهَا خَبَرٌ وَإِجْمَاعٌ، Read the whole chapterCopy with source On the map: PilgrimageCompare