(I [Noah] said [to them]: 'Ask forgiveness from your
Lord; verily; He is Oft-Forgiving. He will send rain to you in abundance; and
give you increase in wealth and children; and bestow on you gardens; and bestow
on you rivers. (Qur'an 71: 10-12)
So seek forgiveness from Allah more often and you will
reap the benefits of doing so: peace of mind, lawful provisions, righteous offspring,
and plentiful rain.
(And [commanding you]: 'Seek the forgiveness of your
Lord, and turn to Him in repentance, that He may grant you good enjoyment, for
a term appointed. And that He may bestow His abounding Grace to every owner of grace
[i.e. the one who helps and serves the needy and deserving, physically and with
his wealth, and even with good words].)
(Qur'an 11: 3)
And the Prophet (Blessings and Peace be upon him)
"Whosoever seeks forgiveness (from Allah) often,
then Allah makes for him a good ending for every matter of concern and provides
for him a way out of every tight situation. "
Related in Bukhari is a hadith that is known as the
chief of Al-lstighfaar (i.e., of supplications with which one asks Allah for forgiveness):
"O' Allah, You are my Lord and none has the right
to be worshipped except you. You have created me and I am your slave; and I am
upon your covenant and promise as much as I am able to be. I seek refuge in you
from the evil that I have perpetrated. I confess to you your favor upon me, and
I confess to you my sin. So forgive me; for verily, none forgives sins except you."