لَا إِيمَانَ لِمَنْ لَا أَمَانَةَ لَهُ
Translation: A person without trustworthiness lacks the completeness of faith.
Source: al-Bayhaqi
Key vocabulary: إِيمَانَ — faith; أَمَانَةَ — trust and trustworthiness; لِمَنْ — for whoever.
Brief grammar: In لَا إِيمَانَ, لَا broadly negates the category of faith; إِيمَانَ is its noun, ending in fatḥah without tanwīn. لَا أَمَانَةَ follows the same pattern.
Trust is not limited to looking after money. It includes carrying out responsibilities and protecting information entrusted to us. The wording is a severe moral warning: betrayal conflicts with faith’s demands, but it is not permission to pronounce automatic judgments on an individual’s religious status.