Explanation of the 20th hadith in the Heart Therapy Series:

The Messenger salla Allahu alayhi wa sallam was asked: “Who is the best of people?” He said: (Everyone with a makhmum [clean] heart and truthful tongue.) They asked: “We know the truthful tongue but what is a makhmum heart?” He answered: (It is the pious and pure one, with no sin, aggression, hatred, and envy in it.”)
Reported by ibn Majah (3416) and declared to be sahih by al-Mundhiri, al-Iraqi, al-Busayri, and al-Albani (Sahih ibn Majah 3416)
قِيلِ لرسولِ اللهِ ﷺ: أَيُّ النَّاسِ أفضلُ قال: (كُلُّ مَخْمومِ القَلبِ صَدوقِ اللِّسانِ) قالوا: صدوقُ اللسانِ نَعرِفُه فما مخمومُ القلبِ قالَ: (هُوَ التَّقِيُّ النَّقِيُّ لا إِثْمَ فِيهِ ولا بَغْيَ ولا غِلَّ ولا حَسَدَ)
رواه ابن ماجه (3416) وصحح اسناده المنذري والعراقي والبوصيري وصححه الألباني (صحيح ابن ماجه 3416)