In The Name of Allaah, The Most Merciful, The Bestower of Mercy

Imaam Ibn Rajab [rahimahullaah] said:

As for the knowledge which Allaah [The Most High] mentioned by way of dispraise, it is that which He [The Most High] mentioned regarding magic:

وَيَتَعَلَّمُونَ مَا يَضُرُّهُمۡ وَلَا يَنفَعُهُمۡ‌ۚ وَلَقَدۡ عَلِمُواْ لَمَنِ ٱشۡتَرَٮٰهُ مَا لَهُ ۥ فِى ٱلۡأَخِرَةِ مِنۡ خَلَـٰقٍ۬‌ۚ

And they learn that which harms them and profits them not. And indeed they knew that the buyers of it (magic) would have no share in the Hereafter. [2:102]

And the statement of Allaah [The Most High]:

فَلَمَّا جَآءَتۡهُمۡ رُسُلُهُم بِٱلۡبَيِّنَـٰتِ فَرِحُواْ بِمَا عِندَهُم مِّنَ ٱلۡعِلۡمِ وَحَاقَ بِهِم مَّا كَانُواْ بِهِۦ يَسۡتَہۡزِءُونَ

Then when their Messengers came to them with clear proofs, they were glad (and proud) with that which they had of the knowledge (of worldly things): And that at which they used to mock, surrounded them (i.e. the punishment). [40:83]

And the statement of Allaah [The Most High] said:

يَعۡلَمُونَ ظَـٰهِرً۬ا مِّنَ ٱلۡحَيَوٰةِ ٱلدُّنۡيَا وَهُمۡ عَنِ ٱلۡأَخِرَةِ هُمۡ غَـٰفِلُونَ

They know only the outside appearance of the life of the world (i.e. the matters of their livelihood, like irrigating or sowing or reaping, etc.), and they are heedless of the Hereafter. [30:7]

Likewise, the Sunnah categorises knowledge into ‘Beneficial Knowledge ‘ and ‘Unbeneficial Knowledge’, and that [one should] seek refuge with Allaah from ‘Unbeneficial knowledge’ and to ask Allaah for ‘Beneficial Knowledge’. Imaam Muslim [rahimahullaah] reports from Zaid Ibn Arqam [radiyallaahu-anhu] that the Prophet [sallal-laahu-alayhi-wasallam] used to say:

اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ عِلْمٍ لَا يَنْفَعُ وَمِنْ قَلْبٍ لَا يَخْشَعُ وَمِنْ نَفْسٍ ‏لَا تَشْبَعُ ‏ ‏وَمِنْ دَعْوَةٍ لَا يُسْتَجَابُ لَهَا

O Allaah! I seek refuge with You from knowledge that does not benefit; from a heart that fears not; from a soul that does not become satisfied and a supplication that is not answered. [Muslim 2722]


[Source: Fadl Ilmis Salaf Alaa Ilmil Khalaf’ pages 44-45. (Abridged and slightly paraphrased)]

To be continued…InShaaAllaah