Conditions for plural marriage

 

on what conditions is it allowed for a muslim to marry more than one wife?

Praise
be to Allaah.  

Marrying more than one wife is a matter which is recommended,
subject to certain conditions: that the man be financially and physically
able for it, and that he be able to treat his wives justly. 

Plural marriage brings a lot of benefits, including protecting the chastity
of the women whom he marries, bringing people closer together, and producing
a lot of children. This is what the Prophet

(peace and blessings of Allaah be upon him) referred to when he said:
“Marry the one who is loving and fertile”. And it serves a lot of other
purposes. But for a man to marry more than one wife by way of boasting
and taking that as a challenge to prove himself, this is a form of extravagance
and extravagance is forbidden. Allaah says (interpretation of the meaning): 

“and waste not by extravagance. Verily, He likes not
al-musrifoon (those who waste by extravagance)”[al-An’aam 6:141]