In Section 34 of Kashf al-Mahjub, Hujwiri refutes those who claim that the manifestation of union (jam') negates separation (tafriqa) and thereby abolishes the servant's duty to strive. He holds that such a claim amounts to pure nullification (ta'til). Just as light is inseparable from the sun, an accident from its substance, and an attribute from the thing it describes, union is inseparable from separation. It follows that spiritual striving (mujahada) is never severed from divine guidance (hidayat), the religious law (shari'a) from the ultimate reality (haqiqa), nor attainment (yaft) from seeking (talab). Striving may either precede attainment or follow it: whoever strives first bears greater hardship, for he labors in a state of absence, while whoever strives afterward is spared such toil, for he labors in a state of presence. So long as the capacity for effort and worship endures, this obligation is never lifted from the servant.