Carried Out Promptly
“O you who believe! Obey Allah and the messenger when he calleth
you to that which will give you life."
It means that whenever the Holy Prophet calls the believers for their improvement and expediency, they should very promptly carry out his orders. Hazrat Abu Sa'eed bin al-'Ala reports, “I was saying the prayer when the Holy Prophet happened to pass by me. He called me but due to prayer I could not go to him promptly. After having completed the prayer when I presented myself before him, he said: "Why did you not come quickly? Has not Allah said that when Allah and the Apostle call you for your own good you should present yourselves immediately?" In short, the order here is for quick execution of an order. Allah Most High says in the Quran: -
"O you who believe! When you meet an army, hold firm and think of Allah much, that you may be successful. And obey Allah and His messenger, and dispute not one with another lest you lose courage and your strength departs from you; but be steadfast! Lo! Allah is with the steadfast." (VIII: 45-46),
Allamah Ibn Kathir writes, ‘In these noble verses Allah Most High orders Muslims to be steadfast in the battlefield against the enemy and to be patient and enduring. Do not show timidity. Remember Allah much; don't ever forget Him. Complain to Him only, invoke Him only and trust and rely upon Him only, and seek help from Him only. This is the secret of success. So, at that time also, don't be remiss in obeying Allah and His Apostle. Carry out what they say and stop from doing what they forbid. Don't spread mutual dissent and quarrels, otherwise timidity will step in and you will be put to disgrace. You will lose credit and strength and bravery will depart from you. Good luck and progress will cease. Beware that you don't give up the skirt of patience; be certain that Allah Most High sides with the steadfast.