To do unto all men as you would wish to have done unto you, and to reject for others what you would reject for yourself.

Muhammad (AD c. 570-632) Arab religious, military, and political leader; founder of Islam [Mohammed, مُحَمَّد]

The Sayings of Muhammed, 138 [tr. Al-Suhrawardy (1941)]

See also the Bible, Matthew 7:12.