Hyssop that is too short may be lengthened with a thread and a spindle-reed. He then dips it and brings it up again. He grasps the hyssop itself and sprinkles with it. Rabbi Judah and Rabbi Shimon say: just as the sprinkling must be done with the hyssop itself so to must the dipping be done with the hyssop itself.

If a person sprinkled and it is doubtful whether the water came from the thread or the spindle-reed or the buds, the sprinkling is invalid. If he sprinkled upon two vessels and it is doubtful whether he sprinkled on both or whether some water from the one dripped on to the other, it is invalid. If a needle was on a piece of earthenware and one sprinkled upon it, and it is doubtful whether he sprinkled on the needle or whether some water dripped on it from the earthenware, his sprinkling is invalid. A flask with a narrow mouth, one may dip in and draw out in the usual way. Rabbi Judah says: this may be done only for the first sprinkling. Hatat waters which were diminished, one may dip only the tips of the buds and sprinkle, provided the hyssop does not absorb [any of the moisture on the sides of the flask]. If one intended to sprinkle in front of him and he sprinkled behind him, or behind him and he sprinkled in front of him, his sprinkling is invalid. If he intended to sprinkle in front of him and he sprinkled to the sides in front of him, his sprinkling is valid. It is permitted to sprinkle upon a person with his knowledge or without his knowledge. It is permitted to sprinkle upon a person and vessels even though there are a hundred of them.

If one was sprinkling from a window in a public domain and [a man who was thus sprinkled upon] entered the sanctuary, and the water was found to be invalid, he is exempt; But if the sprinkling was done from a private window and [a man who was thus sprinkled upon] entered the sanctuary, and the water was found to be invalid, he is liable. A high priest, however, is exempt, whether the sprinkling upon him was done from a private window or from one in a public domain, for a high priest is never liable for entering the sanctuary. [The people] used to slip before a certain window in a public domain, and [nevertheless] they trod [on that spot] and did not refrain [from entering the sanctuary], because they said that hatat waters whose mitzvah had been performed do not defile.

A clean person may hold in the corner of his garment an unclean axe and sprinkle upon it; And even though there is on it enough water for a sprinkling he remains clean. How much water is necessary for sprinkling? Sufficient for the tops of the buds to be dipped and for the sprinkling to be performed. Rabbi Judah ruled: they are regarded as though they were on a hyssop of brass.

One who sprinkles with unclean hyssop: if [the hyssop] was the amount of an egg the water becomes invalid, and the sprinkling is invalid. If it was less than the amount of an egg, the water remains valid but the sprinkling is invalid. It also defiles other hyssop, and that other hyssop to other, even if they be a hundred.

If the hands of a man who was clean for the hatat waters became unclean, his body also becomes unclean, and he conveys uncleanness to his fellow, and his fellow to his fellow, even if they be a hundred.

A flask for hatat waters whose outer part has become unclean, its inner part also becomes unclean, and it conveys uncleanness to another flask, and the other to another, even if they are a hundred. A bell and a clapper are regarded as connected. In the case of a spindle stick used for coarse material, one should not sprinkle on its stick or ring, but if he sprinkled on one, both are regarded as having been sprinkled upon. A spindle stick used for flax they are regarded as connected. If a leather cover of a crib is fastened to its knobs, both are regarded as connected. The base is not regarded as connected either in respect of uncleanness or cleanness. All drilled handles of utensils are regarded as connected. Rabbi Yohanan ben Nuri says: also those that are wedged into holes in the utensils.

The baskets of a pack-saddle, the bed of a barrow, the iron corner of a bier, the [drinking] horns of travelers, a key chain, the loose stitches of washermen, and a garment stitched together with kilayim are regarded as connected in respect of uncleanness but not in that of sprinkling.

The lid of a kettle which is joined to a chain: Bet Shammai say: these are regarded as connected in respect of uncleanness but not in respect of sprinkling. Bet Hillel say: if he sprinkled on the kettle, it is the same as if the lid also was sprinkled upon; but if he sprinkled on the lid only it is not the same as if the kettle also was sprinkled upon. All are eligible to sprinkle, except a tumtum, a hermaphrodite, a woman, and a child that is without understanding. A woman may assist [a man] while he sprinkles, and hold the water for him while he dips and sprinkles. If she held his hand, even if only at the time of sprinkling, it is invalid.

If he dipped the hyssop during the day and he sprinkled during the day, it is valid. If he dipped it during the day and sprinkled at night, or dipped at night and sprinkled on the following day, it is invalid. But he himself may immerse at night and then sprinkle on the following day, for sprinkling is not allowed until the sun is risen. And if any of these was done as early as the rise of dawn it is valid.