Learning and teaching require time, books, facilities, and material support. Using lawful resources for education is not inherently blameworthy. The problem arises when service, truthfulness, and Allah’s pleasure are set aside and money or recognition becomes the *sole* objective.
For example, a teacher may receive a salary while carefully teaching accurate content, honoring students’ rights, and improving personal conduct. That fact alone does not establish the condemned intention.
By contrast, someone who distorts religious teaching merely to secure fame compromises both sincerity and the trust of knowledge.
The restrictive wording لَا يَتَعَلَّمُهُ إِلَّا لِيُصِيبَ ... is decisive: seeking *only* worldly advantage.