The correct answer is 'Bulbule, Gulsitaan' completing the patriotic song 'Saare Jahan Se Achha Hindustan Hamara.' The line means 'We are the bubbles of Hindustan, this Gulsitaan (flower-garden/paradise) is ours.' Written by Muhammad Iqbal, this poem celebrates national pride. 'Chulbule, aashiyaan' and 'Log, Gulsitaan' are incorrect matches. 'Gulsitaan' is Persian for garden or paradise.