Mas’ala 1272الأمShafi'ivol. 1, p. 156vol. 1, p. 156 لِأَنَّهُ مِنْ عَمَلِ الصَّلَاةِ وَقَدْ تَرَكَهُ، Read the whole chapterCopy with source On the map: PrayerCompare