Hazrat Abu Musa (may Allah be pleased with him) said: "Have you not heard this statement of Hazrat Ammar (may Allah be pleased with him) that once the Noble Prophet (peace and blessings be upon him) sent me on an errand, and during the journey, ghusl became obligatory upon me. I did not find water, so I rolled in the earth just as animals do. Then I presented myself before the Noble Prophet (peace and blessings be upon him) and mentioned this incident as well. The Noble Prophet (peace and blessings be upon him) said: 'It would have been sufficient for you to do only this.' Saying this, the Noble Prophet (peace and blessings be upon him) struck his hand on the earth, then joined both hands together and wiped his face with them."

Hazrat Abdullah (may Allah be pleased with him) said: "Do you not know that Hazrat Umar (may Allah be pleased with him) was not satisfied with Hazrat Ammar's (may Allah be pleased with him) statement?"

Shaqiq (may Allah have mercy on him) says: "Once I was sitting with Hazrat Abu Musa Ash'ari (may Allah be pleased with him) and Hazrat Abdullah bin Mas'ud (may Allah be pleased with him). Hazrat Abu Musa (may Allah be pleased with him) said: 'O Abu Abdur Rahman! Tell me, if a person becomes impure and does not find water, will he remain in the state of janabah for a whole month and will not be allowed to perform tayammum?' He replied: 'No, even if water is not found for a month.' Hazrat Abu Musa (may Allah be pleased with him) said: 'Then what will you do with this verse of Surah Ma'idah in which Allah Almighty says: "If you do not find water, then perform tayammum with clean earth."' Hazrat Ibn Mas'ud (may Allah be pleased with him) replied: 'If people are given this permission, they will start performing tayammum and praying even in slight cold.' Hazrat Abu Musa (may Allah be pleased with him) asked: 'Do you dislike it only for this reason?' He replied: 'Yes!' Hazrat Abu Musa (may Allah be pleased with him) said: 'Have you not heard this statement of Hazrat Ammar (may Allah be pleased with him) that once the Noble Prophet (peace and blessings be upon him) sent me on an errand, and during the journey, ghusl became obligatory upon me. I did not find water, so I rolled in the earth just as animals do. Then I presented myself before the Noble Prophet (peace and blessings be upon him) and mentioned this incident as well. The Noble Prophet (peace and blessings be upon him) said: "It would have been sufficient for you to do only this." Saying this, the Noble Prophet (peace and blessings be upon him) struck his hand on the earth, then joined both hands together and wiped his face with them.' Hazrat Abdullah (may Allah be pleased with him) said: 'Do you not know that Hazrat Umar (may Allah be pleased with him) was not satisfied with Hazrat Ammar's (may Allah be pleased with him) statement?'"