Remembrance 2 from Chapter 313
We relate in the book of at-Tirmidhī that Mu‘ādh 
said: “I asked: ‘Messenger of Allah, inform me of a deed that will make me enter me Paradise and take me far away from Hell-Fire.’ He said: ‘You have asked about a matter that is momentous but is easy for those for whom Allah 
has made it easy. Worship Allah and do not assign partners to Him; establish ṣalāh; pay zakāh; fast the month of Ramaḍān; and perform the pilgrimage to the House.’ Then he said: ‘Should I not show you the doors of good? Fasting, is a shield; charity extinguishes sins just as water extinguishes fire; and the ṣalāh of a man in the middle of the night.’ Then he recited ‘They withdraw their sides from their beds. . .’ until he reached ‘. . .they do.’ Then he said: ‘Should I not inform you of the apex of this matter, its pillar and its pinnacle?’ I replied: ‘Yes, Messenger of Allah.’ He said: ‘The apex of the matter is Islam, its pillar is ṣalāh and its pinnacle is jihād.’ Then he said: ‘Shall I inform you of the foundation of all of this?’ I said: ‘Yes, Messenger of Allah.’ He took hold of his tongue and said: ‘Restrain this.’ I asked: ‘Messenger of Allah, shall we be taken to task for what we say?’ He said: ‘May your mother grieve for you! Does anything cast people into Hell-Fire on their faces but the harvest of their tongues?’” [15].At-Tirmidhī holds that this is a ḥasan ṣaḥīḥ hadith.