[Machine] We were with the Messenger of Allah, ﷺ , and he said, "Will you not pledge allegiance?" So we responded three times and we stretched out our hands and pledged allegiance to him. Then we said, "O Messenger of Allah, we have already pledged allegiance to you, so why is that?" He said, "To worship Allah alone and not associate anything with Him, to establish the five daily prayers, and to keep secret a matter which should not be disclosed to people." Abu Abdullah al-Khawlani, whose name is A'iz Ibn Abdullah, and Abu Muslim al-Khawlani, whose name is Abdullah Ibn Thawb, narrated this to us.  

كُنَّا عِنْدَ رَسُولِ اللهِ ﷺ فَقَالَ «أَلَا تُبَايِعُونَ» فَرَدَّهَا ثَلَاثَ مَرَّاتٍ فَقَدَّمْنَا أَيْدِينَا فَبَايَعْنَاهُ فَقُلْنَا يَا رَسُولَ اللهِ قَدْ بَايَعْنَاكَ فَعَلَامَ؟ قَالَ عَلَى أَنْ تَعْبُدُوا اللهَ لَا تُشْرِكُوا بِهِ شَيْئًا وَالصَّلَوَاتُ الْخَمْسُ وَأَسَرَّ كَلِمَةً خَفِيَّةً لَا تَسْأَلُوا النَّاسَ شَيْئًا قَالَ لَنَا أَبُو عَبْدُ الرَّحْمَنِ أَبُو إِدْرِيسَ الْخَوْلَانِيُّ اسْمُهُ عَائِذُ اللهِ بْنُ عَبْدِ اللهِ وأبو مسلم الخولاني اسمه عَبْدُ اللهِ بْنُ ثَوْبٍ  

I gave the pledge of allegiance to Messenger of Allah ﷺ for the following: 1. offer prayers perfectly 2. pay the Zakat (obligatory charity) 3. and be sincere and true to every Muslim. (Using translation from Bukhārī 57)  

«بَايَعْتُ رَسُولَ اللهِ ﷺ عَلَى إِقَامِ الصَّلَاةِ وَإِيتَاءِ الزَّكَاةِ وَالنُّصْحِ لِكُلِّ مُسْلِمٍ»