16896 contract law/ contract of arbitration/ power of court to enforce arbitration agreement volume 2 power of court Civil Code contract law contract of arbitration Federal supreme court of Ethiopia cassation decisions የተዋዋዮች በውሉ አለመግባባት ሲፈጠርና ጉዳዩን በገላጋይ ዳኞች እንዲታይ ሲስማሙ ፍ/ቤት ይህንን ስምምነት ማስፈፀም ያለበት ስለመሆኑ የፍ/ብ/ህ/ቁ. 17111731(1) Cassation decison no. 16896 '