Responding sincerely & devotedly to an invitation from God by fighting in His cause & performing pilgrimage & umraha

This hadith teaches us that when we fight in the cause of Allah, or when we perform Hajj or Umrah, it is as if we are responding to an invitation from Allah. We are a delegation sent by Him, and He will provide for our needs. It is important for us to remember that these acts of worship should be done with sincerity and devotion so that we can receive the blessings from them. We should also remember that these acts of worship should not be done out of pride or arrogance but rather out of humility and submission before our Creator.