This is the 7827th most frequent Turkish word.
kassam
"Kassam" refers to an official who distributes inheritance shares according to Islamic law.
The word 'kassam' here is used in its meaning of 'carrying' or 'lifting', relevant in physical effort.
Eğer o kadar yiyeceği tek başıma kassam, akşam olmadan yorulurum.
If I were to carry all that food alone, I would get tired before evening.
In this sentence, 'kassam' metaphorically refers to bearing or managing a burden or responsibility.
Yeni bir yükümlülük alsam, yükü nasıl kassam bilmiyorum.
If I were to take on a new responsibility, I don’t know how I would handle the burden.
Here 'kassam' explicitly refers to the effort applied in lifting weights during physical exercise.