وَمَنْ يُوفِ لَا يُذْمَمْ وَمَنْ يَهْدِ قَلْبَهُ ۞ إِلَى مُطْمَئِنِّ الْبِرِّ لَا يَتَجَمْجَمِ
Whoever fulfills his pledge is not reproached; whoever guides his heart toward settled righteousness does not waver.
Yūfi concerns fulfilling a pledge, and “lā yudhmam” states the social consequence: no blame attaches to the faithful. Muṭmaʾinn al-birr describes a settled conviction in goodness, while lā yatajamjam means not hesitating or faltering. The verse joins trustworthy outward action to inner resolve.