Okay kiddo, so Buddha sāsana nuggaha is a big, fancy phrase that means something super important. Basically, it's all about the teachings of Buddha.
You see, Buddha was a really wise dude who taught people how to be kind, calm, and happy. His teachings were so powerful that they spread all over the world, and people still follow them today.
So when we talk about Buddha sāsana nuggaha, we're talking about all the different ways that Buddha's teachings have helped us. We might talk about how his teachings have helped us be more patient with our friends, or how they've helped us feel more peaceful when we're feeling stressed.
But here's the thing: Buddha's teachings only work when we actually practice them. It's like learning to ride a bike - you can't just read a book about it, you actually have to get on a bike and pedal! So when we talk about Buddha sāsana nuggaha, we're also talking about how we can put his teachings into practice in our everyday lives.
And when we do that - when we really live by Buddha's teachings - we're helping to spread his wisdom even further. So that's what Buddha sāsana nuggaha is all about: taking Buddha's teachings to heart, and living our lives in a way that honors his wisdom and compassion.