The phrase “There is not a single thing” does not exclude...
The phrase “There is not a single thing” does not exclude anything at all and is indicative of the fact that mankind, animals, and even inanimate objects celebrate the praise of Allah.
Man may comprehend how animals and living beings, including plants, celebrate the praise of their Maker, but his mind may not be able to comprehend how rocks, for example, can also do so, yet the Almighty has already said, “Surely We made the mountains sing the glory (of Allah) in unison with him in the evening and at sunrise” (Holy Qur'an, 38:18) .
If we accept all the above and believe in it, we will have to accept and believe that the Book of Allah contains all injunctions which people need till the Day of Judgment, but we simply do not realize them except when we refer to the one to whom that Book was revealed and who comprehended all the meanings it contains, namely the Messenger of Allah.
The most Exalted One has said, “We have revealed the Book to you clearly explaining everything and guidance, mercy, and glad tidings for those who submit” (Holy Qur'an, 16:89) .
If we believe that Allah, Glory to Him, has clarified everything for His Messenger so that he may explain to people what revelation has been sent to them, we will have to believe that the Messenger of Allah has clarified everything, leaving nothing needed by people till the Day of Judgment without giving a ruling in its regard.
If such a clarification has not reached us, or if we do not now know it, then this is only the outcome of our own shortcoming, negligence and ignorance, or it may be the outcome of the deficiency of the means linking us to it, or it may have resulted from the ignorance of the companions and their lack of awareness of what he had clarified.
But Allah, Glory and Exaltation are His, is too wise to ignore the fact that all these are possibilities, or even realities, so He does not let His Shari`a suffer loss; therefore, He chose from His servants certain Imams whom He permitted to inherit the knowledge of His Book and the ability to explain it to others so that people may not have an argument against Allah; He has said, “Then We gave the Book for an inheritance to those whom We chose from Our servants” (Holy Qur'an, 35:32) .