Abstinence from sins is ...

Abstinence from sins is better than seeking help afterwards.
 Ali ibn Abi Talib

Quotes from the same author

Do not use the sharpness of your speech on your mother who taught you how to speak.
 Ali ibn Abi Talib
The weakest man is the one who is able to correct his moral defects, but doesn't take action.
 Ali ibn Abi Talib
Not every man with a heart is understanding, nor every man with an ear a listener, and nor every man with eyes able to see.
 Ali ibn Abi Talib
A True friend is one who sees a fault, gives you advice and who defends you in your absence.
 Ali ibn Abi Talib
An accepted deed is never small in Taqwa (consciousness of Allah), how can what has been accepted be small?
 Ali ibn Abi Talib