Salams, peace be upon you all, here is the second advice and how it resonates with me. Observing nature is another way a Sufi learns about Allah and meaning of creation.
2. In compassion and mercy be like the Sun: The two questions advice number 2 makes me ask are: How does the Sun give compassion and mercy and how does the Sun give? Yes, we get sunlight which we bodily need and yes, it helps us grow our food. And yes, this could be considered compassion and mercy of Allah on us. The second question, I suspect is more along the lines of what Rumi is telling us. How does the Sun give? Without discrimination is the first answer that comes to mind. Without discrimination, regardless of whether we are from the same neighborhood or ethnic background or from the same race or religion. We all get this blessing freely given and without conditions. And it nourishes our soul as well as our body. So when we are giving something, whether it is our time or money or attention, following Rumi’s advice we should give from our heart joyously in our capacity.