Who speaks Wisdom?

Abû ‘Uthmân Sa’îd b. Ismâ’îl Al-Naysâbûrî (d290H) said:

Whoever governs himself by the Sunnah – in word and deed – will speak with wisdom. But whoever governs himself according to his own desires will speak heresies (bid’ah); because Allah tabâraka wa ta’âlâ said:

And if you obey him (the Messenger) you will be guided. [Sûrah Al-Nûr: 54]

Abû Nu’aym in Al-Hilyah Vol.10 p244, and others.

After mentioning this and other similar narrations Shaykh Al-Islâm Ibn Taymîyah said (Minhâj Al-Sunnah Vol.5 p117):

It is as they said, for if a person does not follow what the Messenger came with he will act according to his own wishes. Thus he will be one who follows his desires without guidance from Allah.

More:

1. The Humble Heretic
2. Mixing with the Wrong Crowd
3. Imâm Mâlik and Heretics
4. In the company of Swine
5. Four People we shouldn’t take knowledge from
6. If you care for your religion
7. Ahl Al-Bid’ah amongst the Jinn