Sahih Muslim
Sahih Muslim 16a
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ الْهَمْدَانِيُّ، حَدَّثَنَا أَبُو خَالِدٍ، - يَعْنِي سُلَيْمَانَ بْنَ حَيَّانَ الأَحْمَرَ - عَنْ أَبِي مَالِكٍ الأَشْجَعِيِّ، عَنْ سَعْدِ بْنِ عُبَيْدَةَ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " بُنِيَ الإِسْلاَمُ عَلَى خَمْسَةٍ عَلَى أَنْ يُوَحَّدَ اللَّهُ وَإِقَامِ الصَّلاَةِ وَإِيتَاءِ الزَّكَاةِ وَصِيَامِ رَمَضَانَ وَالْحَجِّ " . فَقَالَ رَجُلٌ الْحَجِّ وَصِيَامِ رَمَضَانَ قَالَ لاَ . صِيَامِ رَمَضَانَ وَالْحَجِّ . هَكَذَا سَمِعْتُهُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم .
Muhammad ibn Abdullah ibn Numayr al-Hamdani narrated to us; Abu Khalid—meaning Sulayman ibn Hayyan al-Ahmar—narrated to us, from Abu Malik al-Ashja'i, from Sa'd ibn Ubaydah, from Ibn Umar, from the Prophet (peace and blessings be upon him), who said: ‘Islam is built upon five: that Allah be affirmed as One, establishing the prayer, giving zakat, fasting Ramadan, and the Pilgrimage.’ A man said, ‘The Pilgrimage and fasting Ramadan?’ He said, ‘No: fasting Ramadan and the Pilgrimage. This is how I heard it from the Messenger of Allah (peace and blessings be upon him).’