Tafseer of The Iron · Al-Hadid · 57:18
Indeed, the men who practice charity and the women who practice charity and [they who] have loaned Allah a goodly loan - it will be multiplied for them, and they will have a noble reward.
Important: The Arabic source text is always authoritative. This translation is a study aid and has not been verified by scholars — do not use it as a basis for religious proof or for deriving rulings (ahkam). When in doubt, always consult the Arabic text and a qualified scholar.
And His statement: إِنَّ الْمُصَّدِّقِينَ وَالْمُصَّدِّقَاتِ ("Indeed, the men who give alms and the women who give alms"). The reciters differed over its reading. Most of the reciters of the regions, with the exception of Ibn Kathīr and ʿĀṣim, read it with doubling (tashdīd) of the ṣād and the dāl, with the meaning that they are "the men and women who give alms (al-mutaṣaddiqīn wa-l-mutaṣaddiqāt)," whereby the tāʾ is then assimilated into the ṣād, so that it becomes a doubled ṣād, as has been said: يَا أَيُّهَا الْمُزَّمِّلُ ("O you who are enwrapped"), by which al-mutazammil (the one wrapped in a garment) is meant. And Ibn Kathīr and ʿĀṣim read: إنَّ المُتَصَدّقِينَ والمُتَصدّقاتِ ("Indeed, the men who affirm the truth and the women who affirm the truth") with lightening (takhfīf) of the ṣād and doubling of the dāl, with the meaning: indeed, those who have believed Allah and His Messenger and held them to be true.
The correct of the two views on this, in my opinion, is that one says: they are two well-known readings, and the meaning of each of them is sound, so with whichever of the two the reciter recites, he has hit upon what is correct.
The explanation of the word, according to the reading of the one who reads it with doubling in the two letters — I mean in the ṣād and the dāl — is thus: that the men who give alms from their possessions and the women who do so, وَأَقْرَضُوا اللَّهَ قَرْضًا حَسَنًا ("and have lent to Allah a goodly loan"), that is to say: by spending in His way, and in that which He has commanded to be spent, or in that to which He has urged, يُضَاعَفُ لَهُمْ وَلَهُمْ أَجْرٌ كَرِيمٌ ("it will be multiplied for them, and for them is a noble reward"). He says: Allah multiplies for them their loans which they have lent to Him, and pays them their reward for it in full on the Day of Resurrection. وَلَهُمْ أَجْرٌ كَرِيمٌ ("and for them is a noble reward"). He says: and for them is from Allah a reward for their sincerity and their loans to Him, a noble reward, and that is the Garden (janna).