How Allama Kashmiri become such a big scholar?.

Hazrat Allama Kashmiri (rah), he had such a memory that he could remember whatever he read, maybe even after fourty years. So once Mufti Kifayatullah (rah), he was speaking to his students and then he asked a question. Can you tell me how Anwar Shah Kashmiri (rah) became such a big scholar? Someone said, he was very intelligent. The other one replied, O he was a big scholar of Quran. Someone said no, a big scholar of Hadith. One said he was a good poet.
But he (Mufti Kifayatullah) kept quiet. Then the students, they asked him, Hazrat can you tell us how he achieved these heights and became such a big scholar? Then Mufti Kifayatullah (rah) replied that once this question was asked from Allama Anwar Shah Kashmiri (rah) himself. How you became such a big scholar?
He replied that I had a lot of adab for the books of knowledge. I had lot of adab. He said (the questioner) everyone makes adab of this knowledge. He said no, I never touched any Islamic book without wudhu. And if I used to put the books, one on the other, I used to take care of their ranks.
For example, I never put any book of Hadith on Quran. I never put any book of fiqh on Hadith. I never put any book of History on the book of Fiqh. So even on placing the books I used to take care of their ranks. Allahu Akbar! So because he had a lot of adab for the books, so Allah swt gave him such a beneficial knowledge, he had such a power of memorization that he remembered whatever he read even after fourty years of his life.