The Sunnah is Wisdom

Our Lord! Send amongst them a Messenger of their own, who shall recite unto them Your verses and instruct them in the Book (this Qur`ân) and Al-Hikmah (wisdom) and sanctify them. Verily! You are the All-Mighty, the All-Wise.” [Al-Baqarah 2:129]

And remember (O members of the Prophet’s family) that which is recited in your houses of the Verses of Allâh and Al­-Hikmah. [Al-Ahzab 33:34]

It is reported that Al-Hasan Al-Basrî – Allâh have mercy on him said, “Al-Kitâb is the Qur`ân, and Al-Hikmah is the Sunnah.”

It is also reported that Qatâdah – Allâh have mercy on him said, “And [he will] teach them The Book and Al-Hikmah, i.e. the Sunnah.”

Al-Lâlakâ`î, Sharh Usûl I’tiqâd Ahl Al-Sunnah wa Al-Jamâ’ah Vol.1 p86, 87; Ibn Battah, Al-Ibânah Al-Kubrâ Vol.1 p98; and Al-Tabarî in his Tafsîr.

Shaykh Al-Islâm Ibn Taymîyah said (Majmû’ Al-Fatâwâ Vol.3 p366), “A number of the Salaf said that Al-Hikmah refers to the Sunnah, because that which was recited in the houses of [the Prophet’s] wives – Allâh be pleased with them – apart from the Qur`ân was his Sunnah – Allâh’s peace and blessings be upon him.”

More:

1. The House in which the Quran is Recited
2. Wasted Devotion
3. How the Salaf were (and weren’t) when hearing the Quran and Dhikr
4. The Madhab of Imam Malik
5. Losing Ahl Al-Sunnah
6. The Sunni Sinner and the Devout Heretic
7. The Sunnah v. what people do