ሀመሮች ከብት የመዝለል ባህላቸውን “እኩሊ ቡላ”ብለው ይጠሩታል፡፡ በብሄረሰቡ ዘንድ አንድ ወጣት ለጋብቻ ሲደርስ መጀመሪያ “ቦኩ” የሚባል ዱላ ዘመድ በተሰበሰበበት በመውሰድ ከብት ሊዘል መሆኑን በየአካባቢው ላሉ ዘመዶቹ ይናገራል፡፡ ለመዝለል ሳምንት ሲቀረው ወጣቶች እና ሽማግሌዎች ባር (ዳስ) ይሰራሉ፡፡ ሴቶች የድግስ እህል ይፈጫሉ፡፡ ወጣቶች ይጨፍራሉ፡፡
ወጣቱ ከብት በሚዘልበት ቀን ዘመድ አዝማድ ከየቦታው ተሰብስበው ይጨፍራሉ፡፡ ይበላል፣ ይጠጣል፡፡ ሴት ዘመዶቹ ጀርባቸውን በመገረፍ ለወጣቱ ያላቸውን ፍቅር እና ደስታቸውን ይገልፃሉ (ይህ አሁን አሁን እየቀረ መጥቷል)፡፡ ወጣቱም ከ20 እስከ 30 በሚደርሱ የተደረደሩ ከብቶች ጀርባ ላይ በመመላለስ ብቃቱን ያሳያል፡፡ ከዚህን ቀን ጀምሮ ወጣቱ “እኩሊ ቡላ” (ከብት የዘለለ) ተብሎ የሚያገባት እስክትታጭለት ድረስ ከማር ፣ ወተት እና ስጋ ውጭ እህል አይመገብም፡፡
One of the most spectacular ceremonies in the Lower Omo Valley is the UKULI BULA ceremony of the Hamar tribal group; it ís effectively a Rite-of-Passage from boy to manhood. And marriage.
To reach manhood, Hamar boys must undergo two rituals: circumcision and a leap over the bulls. This determines whether the young Hamar male is ready to make the social jump from youth to adulthood.
A key element of the ceremony is the whipping of young women who are family members or relatives of the boy undertaking the Rite-of-Passage. The women trumpet and sing, extolling the virtues of the Jumper, declaring their love for him and for their desire to be marked by the whip.
They coat their bodies with butter to lessen the effect of the whipping which is only carried out by Maza – those who have already undergone this Rite-of-Passage.
Some whipping appears to be tender, others more aggressive. But once whipped, the girls proudly show off their scars – as proof of their courage and integrity.
The italian historian Carlo Conti Rossini has described this part of Ethiopia to be a Museum of Peopleís as there are at least eight major tribal groups living here – numbering around 200,000.
After a successful bull-jump – always naked – the Hamar boy, now a Maz – a mature member of the society – may get married.
Hamar women of the Lower Omo Valley, Southern Ethiopia willingly submit themselves to be whipped during the ceremony of Ukuli Bula . It indicates their courage and capacity for love, and is a form of insurance policy. Should they fall on hard times in later life, they will look to the boy who whipped them to request help.
At every ceremony around the Hamar (also spelt Hamer) participate in this life-changing event.