After finishing his training, in 1921/1338 AH Maulana Idris was named to his first showing post at Madrasah Aminiyah, Delhi. This was during the hour of Mufti Kifayatullah Dihlawi's authority at the madrasah. In any case, after just a single year, Maulana Muhammad Ahmad Nanautawi, muhtamim (bad habit chancellor) of Darul Uloom Deoband, and Maulana Habibur Rahman Usmani, na'ib muhtamim, (professional bad habit chancellor), welcomed Maulana Idris to educate at the Darul Uloom.
Idris started educating at Darul Uloom Deoband in 1922. He was never doled out the rudimentary books; rather, the books at first doled out to him were Hidayah awwalin in Hanafi fiqh and Maqamat-I Hariri in Arabic writing. Later Idris was allocated to show the hadith accumulation Mishkat al-Masabih. Tafsir al-Jalalayn was additionally his obligation. Idris stayed with the Darul Uloom for a long time. During this time he normally conveyed a talk on the Qur'an after Fajr petition in the madrasah's Naudarah building. Gone to by both middle of the road and propelled understudies, in these exercises troublesome issues in tafsir, hadith, ilm al-kalam, and fiqh were talked about.