Does being in a commited married life make it impossible to attain Nirvana? If not, how can one progress towards Nirvana?

Married life is a form of attachment. If one is in a commited relationship he/she is bound to have a multitude of attachments like a wife, children, personal belongings, wealth etc. But Buddha has once said : > Costumes Do Not Mar Virtue: >"Even though adorned, if living in peace calm, tamed, established in the holy life, for beings all laying force aside: one pure, one peaceful, a bhikkhu is he." > Verse 142, DHAMMAPADA. Need some verification as to how someone can be in a commited relationship and at the same time achieve nibbana.