At-Tawbah 9:61
وَمِنْهُمُ الَّذِينَ يُؤْذُونَ النَّبِيَّ وَيَقُولُونَ هُوَ أُذُنٌ ۚ قُلْ أُذُنُ خَيْرٍ لَّكُمْ يُؤْمِنُ بِاللَّهِ وَيُؤْمِنُ لِلْمُؤْمِنِينَ وَرَحْمَةٌ لِّلَّذِينَ آمَنُوا مِنكُمْ ۚ وَالَّذِينَ يُؤْذُونَ رَسُولَ اللَّهِ لَهُمْ عَذَابٌ أَلِيمٌ ٦١
Waminhumu allatheena yuthoona alnnabiyya wayaqooloona huwa othunun qul othunu khayrin lakum yuminu biAllahi wayuminu lilmumineena warahmatun lillatheena amanoo minkum waallatheena yuthoona rasoola Allahi lahum AAathabun aleemun
And some of them hurt the Prophet, saying, ’He is an ear!’ Say: ’An ear of good for you; he believes in God, and believes the believers, and he is a mercy to the believers among you. Those who hurt God’s Messenger -- for them awaits a painful chastisement.’ (9:61)
Hypocrites annoy the Prophet
Allah says, some hypocrites bother the Messenger of Allah by questioning his character, saying,
هُوَ أُذُنٌ
(he is (lending his) ear), to those who say anything about us; he believes whoever talks to him. Therefore, if we went to him and swore, he would believe us. Similar was reported from Ibn `Abbas, Mujahid and Qatadah. Allah said,
قُلْ أُذُنُ خَيْرٍ لَّكُمْ
(Say: "He listens to what is best for you"), he knows who's saying the truth and who is lying,
يُؤْمِنُ بِاللَّهِ وَيُؤْمِنُ لِلْمُؤْمِنِينَ
(he believes in Allah; has faith in the believers), he believes the believers,
وَرَحْمَةٌ لِّلَّذِينَ ءَامَنُواْ مِنكُمْ
(and is a mercy to those of you who believe"), and a proof against the disbelievers,
وَالَّذِينَ يُؤْذُونَ رَسُولَ اللَّهِ لَهُمْ عَذَابٌ أَلِيمٌ
(But those who annoy Allah's Messenger, will have a painful torment.)