As I understand it, if someone is too poor to get married/do a specific mitzva, it is a mitzva in itself to help them perform it.
In the case of mitzvos which are continuous, such as the laying of tefillin, or the wearing of tzitzis, does the person who purchased the tefillin/tallis for an individual receive merit for each time an individual performs the mitzva using that particular tallis/tefillin, or is it a one-time deal?
In other words, take this scenario:
Shmuel buys a tallis for a friend who begins wearing it to daven everyday. Moshe buys a tallis for another friend who wears it only sporadically [not necessarily because he stops davening, but because he received another tallis over time].
Do both Shmuel and Moshe get the same amount of zechus from the fact that they enabled the mitzva in the first place, or does Shmuel get more because Moshe's friend only uses it sometimes?