The statement of the Prophet (saws): Religion is An-Nasihah (to be sincere and true) to Allah, to His Messenger (Muhammad (saws)), to the Muslim rulers, and to all the Muslims

Narrated Jarir bin Abdullah:

I gave the pledge of allegiance to Allah's Messenger (ﷺ) for the following:

1. offer prayers perfectly
2. pay the Zakat (obligatory charity)
3. and be sincere and true to every Muslim.