The source's distinction is visual access: a direct viewer faces the exact structure; a non-viewer faces its direction. Mere presence in Makkah does not automatically turn a hidden Ka'bah into a directly viewed Ka'bah.
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The Rule Depends on Whether the Ka'bah Is Seen
Facing the Qiblah: Exact Direction, Inability, and Uncertainty
The source's distinction is visual access: a direct viewer faces the exact structure; a non-viewer faces its direction. Mere presence in Makkah does not automatically turn a hidden Ka'bah into a directly viewed Ka'bah.