Hadhrat Shaykh Wasiullah Khan (may Allah have mercy on him) said,

“Once Hadhrat Mawlana (Thanawi) was telling us very fine subtleties regarding the gnosis (marifah).

Mawlana Abdul Ghani (may Allah have mercy on him) humbly commented,  “When the understanding of the mystical secrets (marifah) of the friends of Allah (awliya-Allah) is so difficult than how much more demanding it would be to achieve Allah’s marifah.”

Hadhrat Hakim al-Umma (may Allah have mercy on him) appreciated and acknowledged this comment.”

Halate Musleh al-Ummat, page 115