Yechiel Michel Epstein

“ We have already written in section 671 that one is obligated to fill a Menorah with the correct amount of oil before he lights. If one only fills with a bit oil and pronounces the blessings and lights he has not fulfilled his obligation, for there needs to be enough oil at the outset to last the required amount of time, since the lighting is the actual performance of the Mitzvah, and this should be obvious. ”

“ One who has already lit may recite the blessings for another, or for a woman, if they are unable to light and recite the blessings themselves. If they choose this approach, they must stand nearby and the one who recites must have intent to be pronouncing the blessings on their behalf, as is the requirement for reciting any Mitzvah-related blessing for another. ”

“ Regarding this class of blessings the general rule is that one who has already fulfilled his personal obligation can still fulfill the obligation that another has to recite a blessing.
One who is blind - some rule that he is obligated to light the Menorah, even though he cannot see it, since one is not required to derive any benefit from the light. Nevertheless, if he can join another's lighting through contributing a nominal amount to purchase 'a share' of the Mizvah he should do so. [If he does not join with another and] he has a wife, his wife should recite the blessings for him. ”