Musnad Ahmad 962:20

'Isam ibn Khalid narrated to us, Safwan ibn 'Amr narrated to me, from Sulaym ibn 'Amir al-Khabairi and Abu al-Yaman al-Hawzani, from Abu Umamah, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, Allah promised me that He would enter seventy thousand of my nation into Paradise without reckoning." Yazid ibn al-Akhnas al-Sulami said: "By Allah, those are not in your nation except like the reddish-brown fly among the flies." The Messenger of Allah (peace and blessings of Allah be upon him) said: "For my Lord has promised me seventy thousand, and with every thousand, seventy thousand, and He added for me three handfuls." He said: "What is the breadth of your cistern, O Prophet of Allah?" He said: "As it is between Aden and 'Oman, and wider and wider," gesturing with his hand. He said: "In it are two spouts of gold and silver." He said: "What is your cistern, O Prophet of Allah?" He said: "Water whiter than milk, sweeter in taste than honey, and more fragrant in scent than musk. Whoever drinks from it will never thirst after it, and his face will never turn black."