Imām Bukhārī narrates: Muhammad ibn al-Muthannā narrated to us, he said: Yahyā narrated to us, he said: Ismā'īl narrated to us, he said: Qais narrated to us, from Jarīr ibn 'Abdullāh, he said:
I made bai'ah (pledge) with the Messenger of Allāh ﷺ upon establishing prayer, giving zakāh, and being sincere towards every Muslim.
Reference: Sahih Al Bukhari 524