Sahih Bukhari Volume 3, Book 34, Hadith 2158

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، عَنْ إِسْمَاعِيلَ، عَنْ قَيْسٍ، سَمِعْتُ جَرِيرًا ـ رضى الله عنه ـ بَايَعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَلَى شَهَادَةِ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَأَنَّ مُحَمَّدًا رَسُولُ اللَّهِ، وَإِقَامِ الصَّلاَةِ، وَإِيتَاءِ الزَّكَاةِ، وَالسَّمْعِ وَالطَّاعَةِ، وَالنُّصْحِ لِكُلِّ مُسْلِمٍ‏.‏

Narrated By Jarir : I have given a pledge of allegiance to Allah's Apostle for to testify that None has the right to be worshipped but Allah, and Muhammad is His Apostle, to offer prayers perfectly, to pay Zakat, to listen to and obey (Allah's and His Prophet's orders), and to give good advice to every Muslim.