I say, and with God's success: Intention is a condition for the validity of tayammum, and its manner is: that one intends a specific act of worship that is not valid except with purification: such as the prostration of gratitude and the prostration of recitation, or one intends to permit prayer, or one intends purification from minor or major impurity. Indeed, acts of worship are of two types: First: Intended worship: which is that which is legislated from the outset as a means of drawing closer to God without being dependent on something else, or in other words: it is that which is not obligatory as part of something else by dependency, such as the five daily prayers, the funeral prayer, the prostration of recitation, the prostration of gratitude, entering into Islam, and others, and the intended acts among them are those that are not valid without purification: like the prayers and the prostration of recitation, and those that are valid without it: like Islam. Second: Unintended worship: which is that which is contrary to the intended, as it is dependent on something else, such as entering the mosque, touching the Qur'an, responding to greetings, reciting remembrances, and the like. See: Sharh al-Wiqayah p. 107-108, al-Hadiyyah al-‘Alaiyyah p. 33, and ‘Umdat al-Ri‘ayah 1: 99, and God knows best.