Wife's encouragement necessary for execution of duties in grhastha ashram

From the purport to SB 5.1.23:

Maharaja Priyavrata, strictly maintained varnasrama-dharma by his extraordinary, unparalleled prowess.To maintain such a life of strict vigilance, one needs encouragement from his wife. In the varnasrama-dharma system, certain classes, such as the brahmanas and sannyasis, do not need encouragement from the opposite sex. Ksatriyas and grhasthas, however, actually need the encouragement of their wives in order to execute their duties. Indeed, a grhastha or ksatriya cannot properly execute his responsibilities without the association of his wife. Sri Caitanya Mahaprabhu personally admitted that a grhastha must live with a wife. Ksatriyas were even allowed to have many wives to encourage them in discharging the duties of government. The association of a good wife is necessary in a life of karma and political affairs. To execute his duties properly, therefore. Maharaja Priyavrata took advantage of his good wife Barhismati, who was always very expert in pleasing her great husband by properly dressing herself, smiling, and exhibiting her feminine bodily features. Queen Barhismati always kept Maharaja Priyavrata very encouraged, and thus he executed his governmental duty very properly. In this verse iva has twice been used to indicate that Maharaja Priyavrata acted exactly like a henpecked husband and thereby seemed to have lost his sense of human responsibility. Actually, however, he was fully conscious of his position as a spirit soul, although he seemingly behaved like an acquiescent karmi husband.