Hakim al-Umma Hadhrat Mawlana Ashraf ‘Ali Thanawi (may Allah have mercy on him) said,
“Even if a person is not able to perform other works (for his spiritual progress), he should at least appoint some time daily and sit silently in solitude. Doing this, inshaAllah, will direct him to the path.”
Rehmat al Qudoos translation & commentary of Allama Ibn Abi Jumra ra’s Bahjatun nafoos, page 23
Hadhrat Mawlana Mohammad Taqi Usmani (may Allah preserve him) instructed a spiritual aspirant,
“Avoid all useless activities. Everything that is permissible but does not have any benefit in this life or the life to come is useless. Contemplate before indulging in any activity whether this is useful for me or not. Be vigilant. Involvement in useless is a big obstacle in traversing the path (sulook).”