In the first form of dependent goodness, the other act is distinct and comes afterward. Wudu and prayer show this relationship.
Wudu is not explained by visible dirt alone: water is used even when no dirt is on the limbs. Its devotional quality comes through prayer, for which it prepares the worshipper.
The demand for Wudu depends on the demand for prayer. This is an order of legal dependence, not an instruction to pray before doing Wudu. In performance, Wudu comes first; prayer follows.
- Wudu: Goodness Through Prayer