We say Alhumdulillah in happiness because this is Only Allah who can gives us happiness inspite of uncountable sins committed by us all the day long.
Alhumdulillah in sorrow and grief because no matter how sad we are, no matter how gloomy this world looks still there are thousand reasons to smile. There are many people out there who get hurt by the cruelty of this life more than us, trust me there are millions of people crying their heart out because of terrible consequences they are facing, you are alive, you are healthy and if not than healthy more than many people around you.
Alhumdulillah when praising anything in this world because every thing is created by Allah and when we praise something we are actually praising the creator; Allaah.
Isn’t it sufficient for you to say Alhumdulillah?
Isnt it a sufficient reason to praise your Lord?
Aalhumdulillah… Just one word says it all.