Wa alaikum salaam Hamzeh,
In 6:141, yes I agree it is referring to Zakah. I do not agree that Zakah means "taxes paid to the government or the `Islamic State`". Zakah is what is paid from one's income specifically to the categories of people mentioned in 17:26, 30:38 as the article correctly references (or 24:22, 2:215, 2:177 etc.) - namely relatives, poor, refugees, immigrants, fatherless, beggars etc. I called it "charity", but it is an obligatory religious act which "cleanses" our earnings (92:18). "Obligatory charity" or "cleansing charity" would be a more suitable translation than simply "charity". From the verse we learn that it has to taken out from income and not from savings, and also should be done on the pay day, and not once in a year.
About 2:183-184, the traditional interpretation has been that "those who are able to do it" means those who are able to fast. I understand the "it" simply means "feed the poor people", i.e. those who are able to feed the poor, as suggested in the translation I included. It didn't look like the article you referenced considers this perspective. There are two problems that I see with the traditional interpretation:
- first it makes no sense to say that "that those who are able to fast should feed poor people". This necessitates making additional "implied" exceptions that are not mentioned in the verse to try to get around this problem (e.g., adding "but have difficulty" or "but chose not to" etc.).
- Second, is a moral problem: it suggests that affluent people who can afford to feed the poor can "buy out" of their obligation to fast by flashing their wallets, while those who cannot afford to do so do not have such an option.
I believe that "feeding poor people" is an additional obligation upon "those who are able to do it", and not a scheme to "pay out" of one's obligation to fast. By 'fidya' (ransom / repayment / sacrifice) it may be understood that this additional obligation is only for those who are substituting the fasts later, or it is a general sacrifice anybody who can afford it in this month should make.
In any case, the verse continues
Therefore, whoever does any good beyond the call of duty is good for him. I see it as a clear exhortation to do good deeds and be charitable. Beyond fasting ourselves, also feed those in need.
Peace.