Hakeemul Ummat Hazrat Mawlana Ashraf Ali Thanawi ra commenting on the verse 62 of surah Noor: “Only those are believers, who believe in Allah and His Messenger: when they are with him on a matter requiring collective action, they do not depart until they have asked for his leave; those who ask for thy leave are those who believe in Allah and His Messenger; so when they ask for thy leave, for some business of theirs, give leave to those of them whom thou wilt, and ask Allah for their forgiveness: for Allah is Oft-Forgiving, Most Merciful”, said

“Being away from Sheikh’s company, even with permission, is somewhat detrimental.”

Masail us Sulook min Kalam Malik ul Mulook, page 381