Muhammad ibn Yahya, from Ahmad ibn Muhammad, from Al-Barqi, from Sa’d ibn Sa’d, from Safwan, who said: I asked Abu Al-Hasan عليه السلام about a man who needed to perform wudu (ablution) for prayer but could not find water, except for an amount sufficient for wudu, priced at one hundred dirhams or even one thousand dirhams, and he had the means to purchase it. Should he buy it and perform wudu, or should he perform tayammum (dry ablution)? Imam عليه السلام said: "No, rather he should buy it. A similar situation happened to me, and I bought it and performed wudu. That amount of money is not considered a great loss."