Awn bin Abi Juhayfah narrates from his father (may Allah be pleased with him) that he said: I saw the Prophet (peace and blessings be upon him) in a red tent, and I saw Sayyiduna Bilal (may Allah be pleased with him) bring out the water of his (peace and blessings be upon him) ablution. I saw the people hastening towards it and wiping it over their hands; whoever could not get any of it took some moisture from his companion. Then I saw Sayyiduna Bilal (may Allah be pleased with him) bring out a short spear and plant it in the ground. Then the Messenger of Allah (peace and blessings be upon him) came out. I saw him (peace and blessings be upon him); he (peace and blessings be upon him) was wearing a red suit of clothes, and he (peace and blessings be upon him) led the people in two rak'ahs of prayer facing the spear.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5498