While mentioning the first alternative we said that every...
While mentioning the first alternative we said that every praise was Allah's praise. Even when you think that you are commending the merits of a beautiful handwriting, you are actually extolling Allah. Similarly when you believe that you are paying tributes to the world, in that case also you are praising none but Allah.
That is why, while describing the first alternative or the first possibility, we said that every praise was that of Allah, whosoever might be the praiser, for nothing except Allah has an independent existence. Every excellence, every beauty and every perfection belongs to Him only. If Allah withdraws the manifestation of His glory, nothing would be existing any longer. All Existing Things Are A Manifestation of Allah's Glory The existence of everything depends on Allah's glory.
While discussing above the first possibility, we pointed out that everything existing is the outcome of a divine light. Allah Himself says that He is the light of the heavens and the earth. If He takes away this light, everything is bound to disappear and come to an end. As nothing except Allah has any excellence of its own, nothing except Him is worth praising. In fact there is no excellence except His. He excels in His essence, His attributes and the state of His manifestation.
All the merits attributed to anything or anyone else are His merits. Anybody who praises anyone for his excellence and merit, actually praises Him. This is true if we accept the first possibility mentioned above. In the case of the second possibility, which is also no more than a mere guess or a possibility, the word 'al-hamdu' does not imply totality or comprehensiveness.
It only signifies absolute praise without any qualification, restriction or any conception of its opposite being attached to it. But the praise that we perform is definitely not absolute. It is a particular praise expressed by a particular to a particular. We do not have access to the Absolute, nor can we perceive Him. So how can we praise Him. Even at the time of saying, 'al-hamdu lillah', you do not perceive the Absolute Truth, and as such the question of praising the Absolute does not arise.
Whatever praise is expressed, that actually is not the praise of Allah, but is the praise of some manifestation of His glory. In the case of the previous possibility no praise was that of Allah except that expressed by Himself.