He searches for the cure of the world's pleasure, always, always the yearning for the raw.

This profound couplet speaks to the nature of desire. Allama Iqbal suggests that while man is constantly searching for the lasting joy or 'medicine' of worldly pleasure (ऐश-ए-जहाँ), the desire itself—the 'तमन्ना'—remains raw and immature (ख़ाम). It's a commentary on the superficiality of our worldly pursuits; we chase permanence, but our desires are inherently transient and underdeveloped.