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.
tabarani:17532Aḥmad b. Ḥammād b. Zughbah > Saʿīd b. Abū Maryam > Ibn Lahīʿah > Mūsá b. Jubayr > Muʿādh b. ʿAbdullāh b. Rāfiʿ

[Machine] I heard the Messenger of Allah ﷺ saying: "There are two words, one of them has no end below the Throne and the other fills what is between the heavens and the earth: There is no god but Allah and Allah is the Greatest." Ibn 'Umar said to Ibn Abu 'Amrah, "Did you hear him saying that?" He said, "Yes." So Abdullah ibn 'Umar wept until his beard became wet with his tears, then he said, "These are two words that encompass and contain everything."  

الطبراني:١٧٥٣٢حَدَّثَنَا أَحْمَدُ بْنُ حَمَّادِ بْنِ زُغْبَةَ ثنا سَعِيدُ بْنُ أَبِي مَرْيَمَ أَنَا ابْنُ لَهِيعَةَ عَنْ مُوسَى بْنِ جُبَيْرٍ أَنَّ مُعَاذَ بْنَ عَبْدِ اللهِ بْنِ رَافِعٍ حَدَّثَهُ قَالَ كُنْتُ فِي مَجْلِسٍ فِيهِ عَبْدُ الرَّحْمَنِ بْنُ عُمَرَ وَعَبْدُ اللهِ بْنُ جَعْفَرٍ وَعَبْدُ الرَّحْمَنِ بْنُ أَبِي عَمْرَةَ فَقَالَ ابْنُ أَبِي عَمْرَةَ سَمِعْتُ مُعَاذَ بْنَ جَبَلٍ يَقُولُ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ كَلِمَتَانِ إِحْدَاهُمَا لَيْسَ لَهَا نَاهِيَةٌ دُونَ الْعَرْشِ وَالْأُخْرَى تَمْلَأُ مَا بَيْنَ السَّمَاءِ وَالْأَرْضِ لَا إِلَهَ إِلَّا اللهُ وَاللهُ أَكْبَرُ فَقَالَ ابْنُ عُمَرَ لِابْنِ أَبِي عَمْرَةَ أَنْتَ سَمِعْتَهُ يَقُولُ ذَلِكَ؟ قَالَ نَعَمْ قَالَ فَبَكَى عَبْدُ اللهِ بْنُ عُمَرَ حَتَّى اخْتَضَبَتْ لِحْيَتُهُ بِدُمُوعِهِ ثُمَّ قَالَ «هُمَا كَلِمَتَانِ نَعْلَقُهُما وَنَأْلَفُهُمَا»