Bani Adam
From Infogalactic: the planetary knowledge core
The poem "Bani Adam" by Saadi Shirazi is famous between folklore Iranian culture and turns to expression and idiom. This poem is performed by many well known singers and one of them is "Alireza Eftekhari".
Barak Obama,The late president of America, uses this poem in his Noruz message 2009 to Iranian people , also this poem is used as a message that was sent to voyager at far space and become one of dominant messages . There have been many discussions over this poem if یکدیگرند orیک پیکرند is correct. There are Three valid sources for Saadi's works. Mohammad Ali Forooghi , Gholamhesien yousefi and Khalil Khatib Rahbar, in all these three versions we see that یکدیگرند is used.