The amount of water sufficient for the ghusl of janabah and the ruling on water that falls off and rubbing

Question:
There are questions regarding this hadith, Your Eminence the Shaykh. A questioner might ask about the amount of water sufficient for the ghusl of janabah, Shaykh?

Answer:
The best is a sa' (a dry measure of about 3 kg) or what is close to it, from a sa' to five mudds (a quarter of a sa') to a sa' and a half. The Sunnah is to avoid extravagance and to be moderate. The Prophet (peace and blessings be upon him) used to perform ghusl with a sa' to five mudds. He used to perform ghusl with 'Aishah from a vessel holding three finger-widths of water. If one performs ghusl with this amount, it is good. If it is not sufficient for him, he should add more until he has fulfilled his obligation, but he should be careful not to be extravagant with water. If a person finds that a sa' is not sufficient, and five mudds are not sufficient, he should add more until he completes his purification with certainty. The same applies to a menstruating woman and a woman with post-natal bleeding. Yes.