742/1 - Jabalah ibn Suhaym reported: “We were afflicted with a year of drought at the time of ‘Abdullāh ibn al-Zubayr. We received some dates. ‘Abdullāh ibn ‘Umar (may Allah be pleased with him and his father) would pass by us while we were eating and he would say: ‘Do not take two at a time, for indeed the Messenger of Allah (may Allah’s peace and blessings be upon him) forbade taking two at a time. Then, he said: “Unless one asks for his brother’s permission.’” [Narrated by Al-Bukhāri and Muslim]
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1) It is forbidden to eat two items of food at a time without permission from those sharing the meal with him, for this would be injustice to the others.
2) Comprehensiveness of the Shariah that it addresses even the fine aspects of etiquette, a sign of the sublimity of the Islamic legislation.