الْكَذَّابُ مُتَّهَمٌ فِي قَوْلِهِ وَإِنْ قَوِيَتْ حُجَّتُهُ وَصَدَقَتْ لَهْجَتُهُ

The [one who is known to be a] incessant liar is suspected in his speech, even if his proof is strong and his tone is truthful

المصدر : غرر الحكم ودرر الكلم

الْكَذَّابُ وَالْمَيِّتُ سَوَاءٌ فَإِنَّ [لِأَنَ‏] فَضِيلَةَ الْحَيِّ عَلَى الْمَيِّتِ الثِّقَةُ بِهِ فَإِذَا لَمْ يُوثَقْ بِكَلَامِهِ [فَقَدْ] بَطَلَتْ حَيَاتُهُ

The incessant liar and the dead are similar, for indeed (or because) the merit of the living over the dead is the ability to rely on him, so if his words are not reliable then [it is as if] his life is nullified

المصدر : غرر الحكم ودرر الكلم

لَيْسَ لِكَذُوبٍ أَمَانَةٌ وَلَا لِفَجُورٍ صِيَانَةٌ

There is no trustworthiness in an incessant liar and there is no safeguarding [from sin] in the morally corrupt

المصدر : غرر الحكم ودرر الكلم

مَنْ كَثُرَ كَذِبُهُ لَمْ يُصَدَّقْ

One who lies excessively is not believed

المصدر : غرر الحكم ودرر الكلم

مَنْ عُرِفَ بِالْكَذِبِ قَلَّتِ الثِّقَةُ بِهِ

One who is known for lying, the trust [of others] in him decreases

المصدر : غرر الحكم ودرر الكلم

مَنْ عُرِفَ بِالْكَذِبِ لَمْ يُقْبَلْ صِدْقُهُ

One who is known for lying, [even] his truth will not be accepted

المصدر : غرر الحكم ودرر الكلم

لَا خَيْرَ فِي عِلْمِ الْكَذَّابِينَ

There is no good in the knowledge of habitual liars

المصدر : غرر الحكم ودرر الكلم

لَا خَيْرَ فِي قَوْلِ الْأَفَّاكِينَ

There is no good in the words of liars

المصدر : غرر الحكم ودرر الكلم