مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 239
Knowledge
Chapter - Section 2
وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: الْعِلْمُ ثَلَاثَةٌ: آيَةٌ مُحْكَمَةٌ أَوْ سُنَّةٌ قَائِمَةٌ أَوْ فَرِيضَةٌ عَادِلَةٌ وَمَا كَانَ سِوَى ذَلِكَ فَهُوَ فضل . رَوَاهُ أَبُو دَاوُد وَابْن مَاجَه
‘Abdallah b. ‘Amr reported God's messenger as saying, “Knowledge has three categories: a precise verse, or an established sunna, or a firm obligatory duty. Anything else is an extra.” Abu Dawud and Ibn Majah transmitted it.
Mishkat al-Masabih, 239ضَعِيف (الألباني)