Complex sentence: At this time, Lord Ganesh in the disguise of a Brahmin boy accosted him.Ravana requested him to hold the "AtmaLinga" until he performed his rituals, and asked him not to place it on the ground.
Split into simpler sentences: At this time, Lord Ganesh in the disguise of a Brahmin boy came near him. Seeing him, Ravana requested him to hold the "AtmaLinga" until he performed his rituals, and asked him not to place it on the ground.