Mr. Sajid a principal of an engineering college promised his student who was studying in the nal year engineering that if he allows his professor to complete the syllabus one time, principal Sajid would ask the teacher to passing him out in the nal exam. The student promised but did not allow professor to complete syllabus. Professor passed the student before exams subsequently still the syllabus could not be completed. The professor filed a suit for the reversal of result can he succeed? Justify