Is it permissible for a Muslim woman to adhere to the comprehensive, legitimate hijab that covers the entire body and adornment, and to avoid displays of tabarruj, with the conviction that Allah will provide her with a righteous husband, grant her victory, and keep her steadfast upon the truth?

It is permissible for a woman to perform acts of devotion (qurbat) out of a desire for her prayers to be answered and for her to be blessed with a righteous husband, as chastity and modesty are among the causes of marriage. If one performs a righteous deed desiring the face of Allah and the attainment of a worldly purpose, their deed is valid, and they will be rewarded according to their sincerity. This does not contradict sincerity, for working for Allah while hoping for reward does not contradict sincerity. However, if one works solely for a worldly purpose, they will only receive what they intended in this world. It is preferable for a woman to perform good deeds with the intention of obedience, and then to supplicate to Allah through her good deeds to fulfill what she wishes for.