SHAFAQNA – In his last Hajj, The Prophet of Islam (PBUH) gathered people in the Mosque and delivered a comprehensive sermon: There are three cases in which a Muslim does not cheat (and accepts with his/her hearts):
- Work sincerely for the sake of Allah (SWT)
- Sincere faithfulness, and sincere advice for Muslim leaders
- Everlasting presence in Muslims gatherings (in which case) Imam’s prayers will be for them .
Imam Ali (AS) also said: One of my rights on you is that (by your sincere and full-scale presence in administration affairs) in hiding and in open be well-intentioned supporter to me . And in another saying, Imam Ali (AS) mentioned: Then, take my doubt and hesitation away with your sincere and well-intentioned benevolence .
 Al-Kafi, Vol. 1, page 403.
 Nahjul Balaghah, Sermon 34.
 Sharhe Nahjul Balaghah, Ibn Abilhadeed, Vol. 2, page 272.