Is it true that one should not persist in studying books of terminology?

The questioner : They say, O Shaykh, that reading, reading a lot of these books of terminology, does not benefit except through tedious repetition that has no use. It is expected that a man should move on from, after digesting the core, he should immediately move on to the commentary on al-Tirmidhi's 'Ilal, and from there to the 'Ilal, and from there to the Sunan, so that he becomes able to critique the texts as Imam Ahmad and 'Ali ibn al-Madini did. What is your opinion, O Shaykh?

The Shaykh : What Allah willed, what Allah willed. This is a man who is not Sa'd, not happy, understood?

The questioner : Yes, exactly.