61:3
كَبُرَ مَقْتًا عِندَ ٱللَّهِ أَن تَقُولُوا۟ مَا لَا تَفْعَلُونَ
kabura maqtan ʿinda l-lahi an taqūlū mā lā tafʿalūna
Greatly hateful in the sight of Allāh is that you say what you do not do.
— Saheeh International
It is most hateful to God that you say things and then do not do them;
— M. A. S. Abdel Haleem
Most hateful it is with Allâh that you say that which you do not do.
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali