Buy for yourself (through doing good deeds)...

If knowledge is useful without actions, Allah, the Exalted would never have dispraised the people of the book, and if actions were useful without devotions, He would never have have dispraised the hypocrite.

(AL-FAWA'ID A COLLECTION OF WISE SAYINGS Imam Ibn Al-Qayyim)
Piety has Three Levels

1. Protecting the heart and limbs against sin and forbidden actions.
2. Protecting them against undesirable matters.
3. Protecting against curiosity and whatever is not of one's concern.
The first will grant life to the servant, the second will grant his health and power, and the third will grant him happiness and joy.
(AL-FAWA'ID A COLLECTION OF WISE SAYINGS Imam Ibn Al-Qayyim)
The sea of pleasures may drown its owner and the swimmer fears to open his eyes under water.
(AL-FAWA'ID A COLLECTION OF WISE SAYINGS Imam Ibn Al-Qayyim)

Passing days are like dreams, the coming ones are wishes, and the time separating them is wasted.(AL-FAWA'ID A COLLECTION OF WISE SAYINGS Imam Ibn Al-Qayyim)

Buy for yourself (through doing good deeds) while there is still a market and you have the ability to buy.

(AL-FAWA'ID A COLLECTION OF WISE SAYINGS Imam Ibn Al-Qayyim)

If you do not work hard and face difficulties along your way in seeking glory, you will never taste honor and relief when you attain victory.
(AL-FAWA'ID A COLLECTION OF WISE SAYINGS Imam Ibn Al-Qayyim)