لَا إِيمَانَ لِمَنْ لَا أَمَانَةَ لَهُ، وَلَا دِينَ لِمَنْ لَا عَهْدَ لَهُ
Transliteration
La imana li-man la amanata lah, wa la dina li-man la 'ahda lah.
Translation
There is no faith for the one who is not trustworthy, and no religion for the one who does not keep his word.
Narrated by Anas ibn Malik·Musnad Ahmad 12383 (hasan)
