A believer should have two things, the first is khaoof (fear of Allah) and the second is rojaa (hope in Allah). The scholars say that both are “two wings to salvation”.
Allah ﷻ says,
أُولَٰئِكَ الَّذِينَ يَدْعُونَ يَبْتَغُونَ إِلَىٰ رَبِّهِمُ الْوَسِيلَةَ أَيُّهُمْ أَقْرَبُ وَيَرْجُونَ رَحْمَتَهُ وَيَخَافُونَ عَذَابَهُ ۚ إِنَّ عَذَابَ رَبِّكَ كَانَ مَحْذُورًا
“Those whom they invoke seek means of access to their Lord, (striving as to) which of them would be nearest, and they hope for His mercy and fear His punishment. Indeed, the punishment of your Lord is ever feared” [al-Isra’ 17:57].
Allah ﷻ also says:
تَتَجَافَى جُنُوبُهُمْ عَنِ الْمَضَاجِعِ يَدْعُونَ رَبَّهُمْ خَوْفًا وَطَمَعًا
“(the believers), their stomachs were far from their beds, while they pray to Allah with both fear and hope” [as-Sajda:16].
If in your heart there is only fear of Allah, you will despair of Allah’s grace.
On the other hand, if in your heart there is only hope in Allah, you will easily commit immorality. Assuming that Allah will forgive your bad deed.
So, you should have the two things together. So you will always stay away from bad deeds. And you also always trust that Allah will forgive you if you slip to that deeds.
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