Mughira (may Allah have mercy on him) says that Ibrahim (may Allah have mercy on him) disliked the teacher who teaches for a wage to set a condition. (That is, the one who teaches should not impose any condition.)
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 105
Hadith Gradingمحدثین:سنده رجاله ثقات، لكنه ضعيف؛
Hadith Takhrij«أخرجه سعيد بن منصور فى (سننه) برقم: 105، وابن أبى شيبة فى (مصنفه) برقم: 21229»