عَنْ أَبِي قِلَابَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ أَبُو عَبْدِ اللَّهِ لِأَبِي مَسْعُودٍ أَوْ قَالَ أَبُو مَسْعُودٍ لِأَبِي عَبْدِ اللَّهِ يَعْنِي حُذَيْفَةَ رَضِيَ اللَّهُ عَنْهُمَا مَا سَمِعْتَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَقُولُ فِي زَعَمُوا قَالَ سَمِعْتُهُ يَقُولُ ((بِئْسَ مَطِيَّةُ الرَّجُلِ))
Abu Qalabah says: Sayyiduna Abu Abdullah (may Allah be pleased with him) said to Sayyiduna Abu Mas’ud (may Allah be pleased with him), or Sayyiduna Abu Mas’ud (may Allah be pleased with him) said to Sayyiduna Abu Abdullah Hudhaifah (may Allah be pleased with him): What did you hear the Messenger of Allah (peace and blessings be upon him) say regarding “Za’amu”? He said that the Messenger of Allah (peace and blessings be upon him) said: “Za’amu is a bad mount for a man,” (i.e., it is a bad manner of speech).
Brief Explanation
Benefits: … The literal meanings of the word "za‘amū" are: they supposed, they thought, they lied, they said, they made a baseless claim, they held with certainty.
The meaning of this blessed hadith is that a Muslim should only narrate that statement or hadith of which he is certain of its truthfulness; he should refrain from passing on every hearsay. As Sayyiduna Abu Hurayrah radi Allahu anhu narrates that the Messenger of Allah sallallahu alayhi wa sallam said: ((It is sufficient for a man to be considered a liar that he narrates everything he hears.)) (Muslim)
Since in the present era, people have an excessive inclination towards gossip, making mountains out of molehills, and discussing various regions of the world and their inhabitants to the point of obsession, they support their statements by saying: Today this was being discussed in the market, people were heard saying this, such and such a thing was published in such and such a newspaper. This manner is the very example of "za‘amū".
Shaykh al-Albani rahimahullah says: In this hadith, the use of the word "za‘amū" has been condemned, even though it is also used in the meaning of "qāla" (he said). In the Noble Qur’an, wherever the blameworthy actions of blameworthy nations are mentioned, this word is used, as Allah the Exalted said: {زَعَمَ الَّذِیْنَ کَفَرُوْا اَنْ لَّنْ یُّبْعَثُوْا } (Surah at-Taghabun: 7). After that, it is said: {بَلٰی وَ رَبِّیْ لَتُبْعَثُنَّ ثُمَّ لَتُنَبَّؤُنَّ بِمَا عَمِلْتُمْ} (Surah at-Taghabun: 7). There are many such verses of this kind.
Imam Tahawi, after mentioning some verses, said: In all these verses, Allah the Exalted has mentioned the blameworthy conditions of blameworthy nations and their false statements. Therefore, it is disliked for Muslims to adopt the habits of blameworthy people in morals, religions, statements, and actions. Rather, it befits the people of faith to take as their example the morals, praiseworthy methodology, and truthful statements of those who have excelled in faith. May Allah be pleased with them all.
Imam Baghawi said in Sharh as-Sunnah: 12/362: The Prophet sallallahu alayhi wa sallam condemned the word "za‘amū" because most often this word is used for statements that are widespread on tongues but have no chain of transmission or proof. The Prophet sallallahu alayhi wa sallam likened the word "za‘amū" to a mount, because a person uses this word to reach his intended statement. The summary is that the Noble Prophet sallallahu alayhi wa sallam, in this hadith, is commanding verification in statements and narrations; that is, if a person wishes to narrate a hadith, he should only narrate those ahadith which are reported by trustworthy narrators, otherwise he will fall under this Prophetic warning: It is sufficient for a man to be considered a liar that he narrates everything he hears. Also, the Prophet sallallahu alayhi wa sallam said: Whoever narrates a hadith, knowing or thinking it to be a lie, then he is one of the liars. (Sahihah: 866)