Similarly, knowing, for acquiring perception one has to pursue a thing. Doubts are cleared by pursuit of knowledge.

it is said to signify I knew it after doubting:

Daal, rah, yeh

Dareetah: I now know about him: 21:109 adra-oo behi: told him about him*: diraayah means to find out by some effort or tact or to find about something which is doubtful:

This is the reason that this word is not used for Allah*: Ibn Faaris says its basic meanings include to intend and to demand or ask for: also sharp : as such midrun means a comb because its teeth are pointed and sharp: this means dirayah contains the meaning of sharpness as well as intenntion:

Raghib says wherever in the Qur’an it is said , ma adraaka ( what do you know or has somebody made you aware), thereafter the thing has been explained as in 97:2 but wherever is said ma yudreeka ( what tells you) , thereafter that thing is not explained**: but after it la-al (perhaps) has been said and the subject at hand has been discussed (see 42:17, 33:63, 80:3): this means that after ma adraaka,  knowledge (about the thing) has been positively given but after ma yudreeka it is said that perhaps it can be so: for example, in surah Baqar it has been said: wama adraaka ma lailatul qadr: 97:2 what do you know what is lailatul qadr? After this lailatul qadr has been explained: it is  the converse in surah Shura: wama yudreeka la-allas saa’atah qareeb: 22:17 what do you know? Perhaps the time for the revolution is near:

These examples explain the difference of ma adraaka and ma yudreeka.