They knew that if they did not work hard, their families would suffer. However, Jesus reminded them about the birds.
فَقَدْ عَرَفُوا أَنَّ عَائِلَاتِهِمْ سَتُقَاسِي كَثِيرًا إِذَا لَمْ يَعْمَلُوا بِكَدٍّ .‏