Najiyah ‘Anazi reports: There was a disagreement between Sayyiduna ‘Ammar bin Yasir (ra) and Sayyiduna ‘Abdullah bin Mas‘ud (ra) regarding tayammum. Sayyiduna ‘Abdullah said: If I have to stay for a month and do not find water, I will not perform prayer. Sayyiduna ‘Ammar (ra) said to him: Do you remember when you and I were among the camels and I became junub, due to which I rolled in the earth like an animal? Then when I returned to the Messenger of Allah (peace and blessings be upon him) and informed him of what I had done, he (peace and blessings be upon him) said: Tayammum alone would have sufficed you.