Hadith
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “Verily, fasting is not only from eating and drinking. Rather, fasting is from vanity and obscenity. If someone abuses you or acts foolish against you, then say: Indeed, I am fasting.”
عَنْ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِنَّ الصِّيَامَ لَيْسَ مِنَ الأَكْلِ وَالشُّرْبِ فَقَطْ إِنَّمَا الصِّيَامُ مِنَ اللَّغُوِ وَالرَّفَثِ فَإِنْ سَابَّكَ أَحَدٌ أَوْ جَهِلَ عَلَيْكَ فَقُلْ إِنِّي صَائِمٌ
Sahih Ibn Hibban 3479
Ponder This Hadith
The Prophet ﷺ points out here that true fasting is “not only” from eating and drinking, but also from sin. Wouldn’t that mean that the Ismaili method of fasting, which is only from sin, is incomplete?