It was narrated that Abu Raja' said: I heard 'Imran bin Husain (say) that the Prophet (ﷺ) saw a man who was by himself and did not pray with the people. He said: 'O So and so, what kept you from praying with the people?' He said: 'O Messenger of Allah, I have become Junub and there is no water.' He said: 'You should use earth for that will suffice you.'
It was narrated that Jabir bin 'Abdullah said: The Messenger of Allah (ﷺ) said: 'I have been given five things that were not given to anyone before me: I have been supported with fear being struck into the hearts of my enemy for a distance of one month's travel; the earth has been made a place of prostration and a means of purification for me, so wherever a man of my Ummah is when the time for prayer comes, let him pray; I have been given the intercession which was not given to any Prophet before me; and I have been sent to all of mankind whereas the Prophets before me were sent to their own people.