الوقت سیف فان قطعتہ و الا قطعک

و نفسک ان لم تشغلہا بالحق شغلتک بالباطل

Time is like a sword.

If you do not use it appropriately it will sever you.

And

if you do not keep yourself engaged in seeking the truth

your self will seek refuge in evil.

Hakim al-Umma Mawlana Ashraf Ali Thanawi (Allah have mercy on him) said:

Keeping record of time and its organization is a very important thing. It is inappropriate to spend time allocated for one activity in some thing else and then use the other slot to do another thing.

An activity should be done at its scheduled time.

This results in increased barakah (blessing) in time and contentment (of heart).”

HusunulAziz,  #434 pg 412 volume 2