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.