The Quran

وَما لَكُم أَلّا تُنفِقوا في سَبيلِ اللَّهِ وَلِلَّهِ ميراثُ السَّماواتِ وَالأَرضِ ۚ لا يَستَوي مِنكُم مَن أَنفَقَ مِن قَبلِ الفَتحِ وَقاتَلَ ۚ أُولٰئِكَ أَعظَمُ دَرَجَةً مِنَ الَّذينَ أَنفَقوا مِن بَعدُ وَقاتَلوا ۚ وَكُلًّا وَعَدَ اللَّهُ الحُسنىٰ ۚ وَاللَّهُ بِما تَعمَلونَ خَبيرٌ

Ali Unal

What is the matter with you that you do not spend in God’s cause, when God’s is the inheritance of the heavens and the earth?¹ Not equal among you are those who spend before the victory comes and fight (for God’s sake, and those who do not): they are greater in rank than those who spend after the victory comes and fight later. However, to all, God has promised what is the best (Paradise). God is fully aware of all that you do.²

Whether we spend in God’s cause or not, God is the ultimate heir to whatever we have, as it is He Who has granted us whatever we have. He is the real Owner of everything. He has whatever we do, spend or do not spend, recorded, so that He will recompense us for it.
Although both types of people mentioned in the verse may be admitted into Paradise on account of their faith and good deeds, everyone will enjoy Paradise according to the degree of their faith, loyalty to God and His cause, and the value of their good deeds.