Rewards for our good deeds
There is a great deal of reward in this world and the next to be attained through our good works, by Allah's grace.
مَنْ عَمِلَ صَالِحًا مِّن ذَكَرٍ أَوْ أُنثَىٰ وَهُوَ مُؤْمِنٌ فَلَنُحْيِيَنَّهُ حَيَاةً طَيِّبَةً ۖ وَلَنَجْزِيَنَّهُمْ أَجْرَهُم بِأَحْسَنِ مَا كَانُوا يَعْمَلُونَ
Whosoever doeth right, whether male or female, and is a believer, him verily we shall quicken with good life, and We shall pay them a recompense in proportion to the best of what they used to do.
It is from the mercy and bounty of Almighty Allah that He multiplies our good deeds.
Abu Huraira reported: The Messenger of Allah (peace and blessings be upon him) said:
Every deed of the son of Adam is multiplied from ten to seven hundred times. Allah the Exalted says: Except for fasting, for it is done for my sake and I will reward it. (Sahih Muslim 1151)
A good deed is multiplied by Allah from ten like it up to seven hundred. However, a bad deed remains just one bad deed.