Suuratus – Saff Verse 2.
يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لِمَ تَقُولُونَ مَا لَا تَفْعَلُونَ﴿٢
2. O you who believe! Why do you say that which you do not do?
Tafsir Ibn Kathir Volume 9 Page 613.
﴿يأَيُّهَا الَّذِينَ ءَامَنُواْ لِمَ تَقُولُونَ مَا لاَ تَفْعَلُونَ ﴾
(O you who believe! Why do you say that which you do not do) This refutes those who neglect to fulfill their promises. This honorable Ayah supports the view that several scholars of the Salaf held, that it is necessary to fulfill the promise, regardless of whether the promise includes some type of wealth for the person receiving the promise or otherwise. They also argue from the Sunnah, with the Hadith recorded in the Two Sahihs in which Allah’s Messenger said,
«آيَةُ الْمُنَافِقِ ثَلَاثٌ: إِذَا وَعَدَ أَخْلَفَ، وَإِذَا حَدَّثَ كَذَبَ، وَإِذَا اؤْتُمِنَ خَان»
(There are three signs for a hypocrite: when he promises, he breaks his promise; when speaks, he lies; and when he is entrusted, he betrays.) And in another Hadith in the Sahih,
«أَرْبَعٌ مَنْ كُنَّ فِيهِ كَانَ مُنَافِقًا خَالِصًا،وَمَنْ كَانَتْ فِيهِ وَاحِدَةٌ مِنْهُنَّ كَانَتْ فِيهِ خَصْلَةٌ مِنْ نِفَاقٍ حَتْى يَدَعَهَا»
(There are four characteristics which if one has all of them, he is the pure hypocrite, and if anyone has any of them, he has a characteristic of hypocrisy, until he abandons it.) So he mentioned breaking the promise among these four characteristics. We mentioned the meaning of these two Hadiths in the beginning of the explanation of Sahih Al-Bukhari, and to Allah is the praise and the thanks. Therefore Allah implied this meaning, when He continued His admonishment by saying,
﴿كَبُرَ مَقْتاً عِندَ اللَّهِ أَن تَقُولُواْ مَا لاَ تَفْعَلُونَ ﴾
(Most hateful it is with Allah that you say that which you do not do.) Imam Ahmad and Abu Dawud recorded that `Abdullah bin `Amir bin Rabi`ah said, “Allah’s Messenger came to us while I was a young boy, and I went out to play. My mother said, `O `Abdullah! Come, I want to give you something.’ Allah’s Messenger said to her,
«وَمَا أَرَدْتِ أَنْ تُعْطِيَهُ؟»
(What did you want to give him) She said, `Dates.’ He said,
«أَمَا إِنَّكِ لَوْ لَمْ تَفْعَلِي كُتِبَتْ عَلَيْكِ كَذْبَة»
(If you had not given them to him, it would have been written as a lie in your record)”