They are stingy with you
أَشِحَّةً عَلَيْكُمْ
By the assistance, which is the plural of stingy, and it is a state describing the pronoun in
they come
يأتون
and do not go to battle, except for a few,
وَلا يَأْتُونَ الْبَأْسَ إِلَّا قَلِيلًا [Al-Ahzab 33:18]
They are stingy with you
أشحة عليكم
. “Stingy” is the plural of a stingy person. A stingy person is one who withholds while being eager, whereas a miser is one who withholds without eagerness. So if a person is withholding in a way that implies eagerness, that is called stinginess. And if he is a miser but not the type of man who is eager to accumulate wealth, for example, then he is called a miser. For this reason, the Prophet (peace and blessings be upon him) warned against stinginess:
and beware of niggardliness, for niggardliness destroyed your predecessors.
اتقوا الشح فإنه أهلك من كان قبلكم Bulugh al-Maram 16:47 Now, he says:
They are stingy with you
أشحة عليكم
What put it in the accusative case? It was put in the accusative as a state describing the subject of
they come
يأتون
, meaning they do not come except in small numbers, and yet they come being stingy with you, meaning they are stingy toward you; they do not want you to attain good, but rather they love to withhold all good from you.