فَاتَّقُوا اللَّهَ مَا اسْتَطَعْتُمْ وَاسْمَعُوا وَأَطِيعُوا وَأَنفِقُوا خَيْرًا لِّأَنفُسِكُمْ وَمَن يُوقَ شُحَّ نَفْسِهِ فَأُوْلَئِكَ هُمُ الْمُفْلِحُونَ
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سورة الـتغابن
(64/16) So have piety towards Allah as much as you can (at a highest level you can). Hear and obey! And spend as it is better for you; and whoever may save himself from the greediness of his soul, then these it is that have reached Salvation.
Surah At-Taghabun