Allah will grant him a goodly provision from sources he could not imagine
Allah says (interpretation of the meaning):
“Whoever works righteousness — whether male or female — while he (or she) is a true believer (of Islamic Monotheism) verily, to him We will give a good life (in this world with respect, contentment and lawful provision), and We shall pay them certainly a reward in proportion to the best of what they used to do (i.e. Paradise in the Hereafter)”
Shaykh ‘Abd al-Rahmaan as-Sa’dee (may Allah have mercy on him) said:
The one who combines faith and good deeds, “to him We will give a good life” by giving him tranquility in his heart and peace of mind, and by causing him not to pay any attention to that which could disturb his heart. Allah will grant him a goodly provision from sources he could not imagine, and “We shall pay them certainly” in the Hereafter“a reward in proportion to the best of what they used to do”, all kinds of delight such as no eye has seen, no ear has heard and it has not crossed the mind of any man. So Allah will give him good in this world and good in the Hereafter.
[Tafseer as-Sa’dee (p. 448)]