For when they say, i.e., when the unbelieving, those who are in darkness, say, etc. The punishment will fall when least expected.
कहिलेकाहीँ संयोगले साह्रै ठूला उपलब्धि पनि हुन्छन्, कहिलेकाहीँ संयोगले दुर्घटना पनि हुन्छ ।