Perform pilgrimage if able; remember Allah; unite with fellow believers; obey parents/elders/guardians etc.; practice good deeds etc..

This hadith highlights the importance of performing the pilgrimage to Makkah, known as Hajj. It is an obligation upon all Muslims who are able to do so, and it is a great act of worship that brings one closer to Allah. Abdullah's sons were asking him why he was going for Hajj that year, which shows how important it was for them too. Performing the rituals of Hajj is a way to remember Allah and His greatness, and it also serves as an opportunity for Muslims from all over the world to come together in unity and brotherhood.