Asla is a substitute for anything that occupies space and has mass, an adjective that can be used in either a positive or a negative sense, a feeling to describe happiness and sadness at the same time, and a substitute for other words that we use in our daily life.
Tum ruko mai gaand maarne ka asla lekar aaya (Wait here, I'm going to bring a condom)
Bhai professor ne asla karva diya (Bro the professor failed me)
Meri saas ke 3 asle, teeno kalakar (My mother in law has 3 sons, all three are artists)
Mera asla kho gaya Chennai me (I lost my water bottle in Chennai)
Naya asla aaya hai mere asle pe aa jao (I scored some new stuff, come to my room)