Is it permissible to pray in trousers at home, or must one wear an abaya for that?

A woman's prayer in trousers is disliked, even in her home, because it defines her limbs and body. Al-Majd, in his commentary, stated the dislike of a woman tightening her clothes so as not to reveal the size of her limbs. Sheikh Saleh Al-Fawzan issued a fatwa permitting prayer in trousers or light clothing if it covers the 'awrah, but with sin; because tight clothing may violate the rules of prayer and be a cause of temptation.