Allah says,
﴿اللَّهَ قَرْضاً حَسَناً وَمَا﴾
(and lend to Allah a handsome loan.) meaning, from charitable donations. For verily, Allah will reward for this the best and most abundant of rewards. This is as Allah says,
﴿مَّن ذَا الَّذِى يُقْرِضُ اللَّهَ قَرْضًا حَسَنًا فَيُضَاعِفَهُ لَهُ أَضْعَافًا كَثِيرَةً﴾
(Who is he that will lend to Allah a goodly loan so that He may multiply it to him many times) (2:245) Then Allah says,
﴿تُقَدِّمُواْ لاًّنفُسِكُمْ مِّنْ خَيْرٍ تَجِدُوهُ عِندَ اللَّهِ هُوَ خَيْراً وَأَعْظَمَ أَجْراً وَاسْتَغْفِرُواْ﴾
(And whatever good you send before you for yourselves, you will certainly find it with Allah, better and greater in reward.) meaning, for all that you send before yourselves, you will get it (back) and it will be better than what you kept for yourselves in the worldly life. Al-Hafiz Abu Ya`la Al-Mawsili reported from Al-Harith bin Suwayd, from `Abdullah that Messenger of Allah said,
«أَيُّكُمْ مَالُهُ أَحَبُّ إِلَيْهِ مِنْ مَالِ وَارِثِهِ؟»
(Which of you hold his wealth to be more beloved to him than the wealth of his heir) rThey said, "O Messenger of Allah! There is not a single one of us who does not hold his wealth to be more beloved to him than the wealth of his heir.'' The Messenger of Allah then said,
«اعْلَمُوا مَا تَقُولُون»
(Know what you are saying!) They replied, "What do we know other than this, O Messenger of Allah'' He then said,
«إِنَّمَا مَالُ أَحَدِكُمْ مَا قَدَّمَ، وَمَالُ وَارِثِهِ مَا أَخَّر»
(The wealth of one of you is only that which he sends forth, and the wealth of his heir is that which he leaves behind.) Al-Bukhari also recorded this Hadith. Then Allah says,
﴿وَاسْتَغْفِرُواْ اللَّهَ إِنَّ اللَّهَ غَفُورٌ رَّحِيمٌ﴾
(And seek forgiveness of Allah. Verily, Allah is Oft-Forgiving, Most-Merciful.) meaning, remember Him and seek forgiveness from Him often for all of your matters. For verily, He is Most Forgiving, Most Merciful to whoever seeks His forgiveness. This is the end of the Tafsir of Surat Al-Muzzammil, and all praise and blessings are due to Allah.