Mawlana Abul Hasan Ali Nadwi said in regards to Shaykh Shah Wasiullah (may Allah have mercy on them),
“Those who attended his discourses not only felt the aroma of faith, the zest of worship and awareness of Here-after but also became aware of their own short comings and their unique personal spiritual ailments.
They left these gatherings not only with spiritual satisfaction but with a desire to change their present condition, feeling burdened with the previous mistakes and remorseful on the life already wasted.
This is the real benefit and result of being in presence (suhba) of and attending the spiritual discourses of the the pious (ahl Allah), the spiritual physicians (musliheen).
Halat e Muslih al-Ummat ra, page 6