Issue No.39- Tap water in buildings, bathrooms, etc., which is connected to a reservoir, is treated as flowing water, provided that the water in the reservoir alone or together with the water in the pipes is not less than kurr.
Issue No.40- If a container is placed under tap water, the water in the container is treated as flowing water while it is connected to the tap water.
Issue No.42- It is not sufficient that only a few drops fall, rather, it is necessary that it precipitates to an extent that it can be said that it has rained.
Issue No.44- If there is original najāsah on the earth or the roof of a building, and rain falls on it, it will be necessary, as an obligatory precaution, to avoid the water. However, the amount that has not fallen on the najāsah is ṭāhir, and if it is mixed with that which has come in to contact with the najāsah and flows down the rain drain pipe, it will be ṭāhir too.
Issue No.45- If rainwater flows and reaches under the roof or a place where rain does not fall, it will make that place ṭāhir provided that the rain has not stopped.
Issue No.46- If rainwater collects in a place and is still connected to the rain, the water is treated as rainwater and makes any najis thing ṭāhir, even if it is less than kurr.
Issue No.47- If it rains on a ṭāhir carpet which has been spread on a najis surface and the water begins flowing beneath it, not only does the carpet not become najis, but the surface becomes ṭāhir too.
Issue No.48- If it rains on a pond whose water is najis and mixes with it, the pond water will become ṭāhir.
Issue No.50-Though the water of a well does not become najis owing to something najis falling in it, yet, it is recommended (mustaḥab) that a quantity of water be drawn from the well for each najis thing and thrown away. Details about this quantity are given in detailed fiqhi books.
Issue No.56- Water which was previously unmixed that we are uncertain whether has turned into mixed water or not (like in the case of floodwater where we don’t know whether it is called normal water or not anymore), will be treated as unmixed water, i.e., it will make najis things ṭāhir and it will also be in order to perform wuḍū and ghusl with it. However, if it was previously mixed water, and it is not known whether or not it has turned into unmixed water, it will be treated as mixed water.
Issue No.56- Water which was previously unmixed that we are uncertain whether has turned into mixed water or not (like in the case of floodwater where we don’t know whether it is called normal water or not anymore), will be treated as unmixed water, i.e., it will make najis things ṭāhir and it will also be in order to perform wuḍū and ghusl with it. However, if it was previously mixed water, and it is not known whether or not it has turned into unmixed water, it will be treated as mixed water.
Issue No.57- Water which is not known to be mixed or unmixed, whose previous state (of being mixed or unmixed) is also unknown, will not make najis things ṭāhir, and cannot be used to perform wuḍū or ghusl with, but if a najis thing reaches it, it does not become najis.
