Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
muslim:16a – Muḥammad b. ʿAbdullāh b. Numayr al-Hamdānī > Abū Khālid / Sulaymān b. Ḥayyān al-Aḥmar > Abū Mālik al-Ashjaʿī > Saʿd b. ʿUbaydah > Ibn ʿUmar

(The superstructure of) al-Islam is raised on five (pillars), i. e. the oneness of Allah, the establishment of prayer, payment of Zakat, the, fast of Ramadan, Pilgrimage (to Mecca). A person said (to 'Abdullah b. Umar the narrator): Which of the two precedes the other-Pilgrimage or the fasts of Rarnadan? Upon this he (the narrator) replied: No (it is not the Pilgrimage first) but the fasts of Ramadan precede the Pilgrimage.  

مسلم:١٦a – 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 ﷺ قَالَ: «بُنِيَ الإِسْلاَمُ عَلَى خَمْسَةٍ عَلَى: (١) أَنْ يُوَحَّدَ اللَّهُ، (٢) وَإِقَامِ الصَّلاَةِ، (٣) وَإِيتَاءِ الزَّكَاةِ، (٤) وَصِيَامِ رَمَضَانَ، (٥) وَالْحَجِّ۔» فَقَالَ رَجُلٌ: الْحَجِّ وَصِيَامِ رَمَضَانَ؟ قَالَ: لاَ، صِيَامِ رَمَضَانَ، وَالْحَجِّ۔ هَكَذَا سَمِعْتُهُ مِنْ رَسُولِ اللَّهِ ﷺ  

See similar narrations below:

Collected by Nasāʾī
nasai:5001 – Muḥammad b. ʿAbdullāh b. ʿAmmār > al-Muʿāfá / Ibn ʿImrān > Ḥanẓalah b. Abū Sufyān > ʿIkrimah b. Khālid > Ibn ʿUmar > a man > Lah Alā Taghzū

A man said to him: "Why don't you go out and fight?" He said: "I heard the Messenger of Allah [SAW] say: 'Islam is built on five (pillars): Testimony that there is none worthy of worship except Allah, establishing Salah, giving Zakah, Hajj, and fasting Ramadan.'"  

النسائي:٥٠٠١ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ عَمَّارٍ قَالَ حَدَّثَنَا الْمُعَافَى يَعْنِي ابْنَ عِمْرَانَ عَنْ حَنْظَلَةَ بْنِ أَبِي سُفْيَانَ عَنْ عِكْرِمَةَ بْنِ خَالِدٍ عَنِ ابْنِ عُمَرَ أَنَّ رَجُلاً قَالَ لَهُ أَلاَ تَغْزُو قَالَ

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ بُنِيَ الإِسْلاَمُ عَلَى خَمْسٍ شَهَادَةِ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَإِقَامِ الصَّلاَةِ وَإِيتَاءِ الزَّكَاةِ وَالْحَجِّ وَصِيَامِ رَمَضَانَ