يَا أَيُّهَا الَّذِينَ آمَنُوا اتَّقُوا اللَّهَ وَقُولُوا قَوْلًا سَدِيدًا ۝ يُصْلِحْ لَكُمْ أَعْمَالَكُمْ وَيَغْفِرْ لَكُمْ ذُنُوبَكُمْ ۗ وَمَن يُطِعِ اللَّهَ وَرَسُولَهُ فَقَدْ فَازَ فَوْزًا عَظِيمًا

The injunction refrains believers from harassing the Prophet Muhammad, as did the Jews to the Prophet Moses. The verse was revealed in the backdrop of the following incident. Once when the Prophet was in Madinah, he received some goods, which he distributed among the people. Subsequently, one of the Ansars (followers of the Prophet who hailed from Madina) criticized him, saying: ‘By God, Muhammad has sought neither the pleasure of God nor a home in the Hereafter, by this distribution.’ When this incident was brought to the notice of the Prophet, he said, ‘May the Mercy of God be on Moses. He was given much more trouble, but he remained patient.’ (Tafsir ibn Kathir). There are two types of utterances—the straightforward and the devious. The straightforward utterance is that which exactly conforms to the facts; which is based on factual analysis and which is presented with the support of solid arguments. As opposed to this, the devious utterance is that which is not reality-oriented, which is based on guesses and conjectures and simply amounts to expressing an opinion: it is not factual reporting. The first mentioned is the utterance of the believer (mu’min), while the second is that of the hypocrite.

— Source: Tazkirul Quran (Maulana Wahiduddin Khan) via Quran.com (33:70)