Abu Wa'il (may Allah have mercy on him) said that Sayyiduna Abu Musa (may Allah be pleased with him) said to Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him): If he does not find water, he is not to pray? Sayyiduna Abdullah (may Allah be pleased with him) said: Yes; if I did not find water for a month, I would not pray. If I were to grant them a concession in this, then whenever one of them felt the cold, he would do like this, that is, perform tayammum, and pray. I said: What about the statement of Sayyiduna Ammar (may Allah be pleased with him) to Sayyiduna Umar (may Allah be pleased with him)? He said: I do not see that Sayyiduna Umar (may Allah be pleased with him) was satisfied with the statement of Sayyiduna Ammar (may Allah be pleased with him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1030