Is polygamous marriage possible?

Question:

Is polygamy not allowed these days, because a man must treat all women equally for marriage, but only an infallible imam can do this?

Answer:
This judgement is not correct and is often based on a misunderstanding of the text.

Hisham Ibn Al-Hakam reported that he asked Imam As-Sadiq (a.) about the verse: “Then marry whatever women you like, two, three or four. But if you are afraid not to treat (them) equally, then only one.” (4:3) He said: “By this is meant: “In financial expenses.” As for the word of the Exalted: “You will not be able to treat women equally, no matter how hard you try, but do not turn away (from one) altogether so that you leave them suspended.” (4:129) So by this is meant:”in showing love.” [Wasa’il-ush-Shi’ah by Al-Hurr Al-Amili, Volume 15 Pages 86 – 87 Hadith 1]

محمد بن يعقوب، عن علي بن إبراهيم، عن أبيه، عن نوح بن شعيب ومحمد بن الحسن، عن هشام بن الحكم في حديث أنه سأل أبا عبد الله عليه السلام عن قوله تعالى: فانكحوا ما طاب لكم من النساء مثنى وثلاث ورباع فان خفتم أن لا تعدلوا فواحدة قال: يعني في النفقة، وعن قوله تعالى: ولن تستطيعوا أن تعدلوا بين النساء ولو حرصتم فلا تميلوا كل الميل فتذروها كالمعلقة يعني في المودة

Comment:

If you can finance four, you can marry four.