Waminhum man yalmizuka fee assadaqati fa-in oAAtoo minha radoo wa-in lam yuAAtaw (surah Tawbah: 58)

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(9:58) O Prophet, there are some among them who find fault with you concerning the distribution of Sadaqat (Zakat collections); if something is given to them thereof, they are well pleased and if they are not given anything thereof they become angry. *57

Wa minhum mai yalmizuka fis sadaqaati fa-in u`too minhaa radoo wa illam yu`taw minhaaa izaa hum yaskhatoon

*57) The people referred to were the hypocrites, who felt depressed on every occasion of the distribution of the Zakat collections, for they thought that they were not being given their due share. Then they would taunt the Holy Prophet with making unfair distributions. This happened when the payment of Zakat was made an obligatory duty on all those Muslims whose possessions exceeded the prescribed limits. They were required to contribute from their agricultural products, animals, commercial commodities, minerals dug out of mines and the gold and silver they possessed, at different rates, varying from 2 1/2% to 20%,and all these were collected and spent in a systematic way from a central place.
As a result of this so much wealth flowed into the hands of a single person, the Holy Prophet, that it had no parallel in the whole territory of Arabia. Naturally the materialists looked at these things with greedy eyes and wanted to grab as much as possible out of this wealth. But their greed could not be satisfied, for the Holy Prophet, who had made the use of Zakat Fund unlawful for his own person and for his own relatives, could not be expected to give anything out of it to anyone who did not deserve it. It is thus obvious that they found fault with the Holy Prophet not because he was unfair in the distribution of the Zakat collections but because he did not allow the hypocrites to grab anything from these without any right to them. They, however, very cunningly hid their real grievance, and accused the Holy Prophet of showing partiality and injustice in the distribution of the Zakat collection