When Tayammum Is Necessary and Finding Water Thereafter

5. Al-Husayn ibn Muhammad has narrated from Mu‘alla’ ibn Muhammad from al-Washsha’ from Aban ibn ‘Uthman from ‘Abd Allah ibn ‘Asim who has said the following: “I once asked abu ‘Abd Allah عليه السلام, about a man who cannot find water and with Tayammum begins to perform Salah (prayer); then the boy brings water for him. He (the Imam) said, ‘If he has not yet assumed the position of Ruku‘, he must discontinue his Salah (prayer) for Wudu’, but if he has already assumed Ruku‘ position, he must continue with his Salah (prayer).”’